Compact Laser Module Manual
Contents
1. Laser Diode Optical Feedback Warning Semi conductor laser diodes are highly sensitive to optical feedback They can suffer damage that maybe immediately apparent through loss in power or a reduction in life Furthermore wavelength stabilized laser diodes may lose their spectral characteristics such as center wavelength and linewidth if sufficient optical feedback exists Your Ondax laser diode does not incorporate an optical isolator so may be susceptible to extraneous optical feedback We recommend the following precautions e If the output of the laser diode is collimated all reflective surfaces in the optical path should be angled so that surface reflections would not be reflected back to the laser diode Furthermore since optimal alignment for interferometric measurement instruments is often achieved with the instrumentation optics at normal incidence to the laser we recommend the use of optical isolators or slightly misaligning the instrument to avoid direct feedback into the laser e Beware of focusing the light output on a highly reflective scattering surface This is another means of generating high optical feedback to the diode e If fiber coupling anti reflective AR coated tips are recommended for multimode MM fiber Angle polished tips and AR coating are recommended for single mode SM fiber e Beware of wavelength selective filters with narrow wavelength pass bands Care should be taken not to align at normal incidence to2. TEMoo Beam Divergence full lt 1 mrad Beam Size at Aperture FWHM lt 1mm Beam Pointing Stability 10 urad Polarization typical gt 100 1 vertical or horizontal Warm up Time 5 min ELECTRICAL Operating Voltage 3 3 V DC Operating Current 1 5 A max MECHANICAL Laser Dimension 40 mm x 42 5 mm x 100 mm Weight 1 Ib Operating Temperature 10 C to 40 C Storage Temperature 40 C to 80 C MEONDAX Compact Laser Diode Module User Manual LETTELELELELETT oss ULLELELEEHL TTL POWER ere MENU UP DOWN ENTER NOILVIC v8 83S v1 Figure 1 Mechanical Dimensions S ONDAX Compact Laser Diode Module User Manual Pins Definition Description 1 VCC Positive Power Pin 3 3V 2 TXD Send data to computer RS232 3 RXD Receive data from computer RS232 4 Not used 5 GND GND for power and RS232 communication 6 TTL CON Outside TTL modulation 7 Not used 8 Not used 9 GND GND for power and RS232 communication Note Pinout is compatible with standard RS232 cable for interfacing with computer port or USB RS232 adapter Unit mates with a female DB9 connector 2 1 x 5 5mm Center Positive Standard Jack for supplying operating voltage and current GE GND VCC Figure 2 Electrical Connections Power LED LED on indicates power on Lase
3. are the same Set TEC Temp 10 50 C 22 00 e TEC Operation TEC Operation TEC Operation State ON State OFF S ONDAX Compact Laser Diode Module User Manual Press ENTER to select TEC operation and the cursor will go down to the O Then pressing the UP or DOWN will set TEC on or off The TEC will not turn on or off until pressing ENTER to confirm the operation Pressing MENU will cancel the change All the following setups for selecting ON OFF or Disable Enable are the same as the TEC operation e Set ACC Current Set ACC Current lt 100 OmA 100 00 The maximum ACC current is the ACC full current e Disable Enable Laser ACC Driver ACC Operation ACC Operation State Disable State Enable e On Off Laser ACC Driver ACC Operation ACC Operation State ON State OFF e Set Laser Current Limit Max Current Limit mA 400 00 If the laser current is over this value the laser will be shut down e Change Password default 0000 will skip password entry on startup Change Password Password 0000 e Change Laser Run Mode Change Run Mode Run Default Mode Press ENTER and then press UP or DOWN to change the run mode to Internal Mod
4. the beam Furthermore be careful not to align the reflected light to be normal incidence during the alignment process e g sweeping the beam back across the laser during alignment If such a possibility is unavoidable use a sufficient OD filter or isolator at the output of the laser diode during the alignment process Please note that if sufficient additional feedback reaches the laser diode it would overcome the grating induced stabilization unlocking and shifting the wavelength of the laser beyond the pass band of the filter This will dramatically increase the reflected intensity back into the laser possibly causing damage Optical Element 2 Optical Element 1 Optical Element 1 Optical Element 2 Collimating Lens S ONDAX Compact Laser Diode Module User Manual 1 1 Explanation of Warning Symbols The meaning of the symbols used in this manual and attached to the product follows Warning messages are intended to prevent accidents to operating personnel such as burns and electrical shocks Some caution messages are intended to prevent damage to the module Fo ad Precaution for handling electrostatic sensitive devices Visible and or invisible Class 3B laser radiation Avoid direct exposure to beam Wear suitable protective eyewear whenever laser is in operation Laser Aperture Laser output location warning A Warning To prevent permanent damage observe these precautions 1 Protect against electrostatic
5. 76mmLx45mmWx32mmT Original Power Supply for Module Not connected when keyswitch is used 135mmLx127mmWx65mmT 1 5m PART N TSTA 73O00 5 2 penau 102mmLx65mmWx77mmT n I TT ONTPIT 754C 20A 1 5m 1 8m Illustration of Keyswitch with Module 5 Maintenance 5 1 Maintenance and Inspection Routine maintenance is not required If the unit appears to be operating incorrectly or with low output power check the following e Inspect the enclosure for scratches dings dents or other signs of damage due to handling e Verify that the module enclosure has not been opened and the factory seal is intact e Verify power source connections to the laser module e Ensure that the operating environment is within specifications 6 Service 6 1 Repair There are no user serviceable parts inside and do not attempt to open housing Warranty would not be valid if housing has been opened If the module fails during use check the items in section 5 1 before requesting an RMA a ONDAX Compact Laser Diode Module User Manual Defective modules that are beyond the warranty period will be repaired at cost if possible An RMA must be requested before sending it to Ondax When shipping please use a box at least five times as large as the module with enough packaging material to prevent any movement of the module within the box 6 2 For Information or Enquiries If you need information regarding purchase or repair or for any other
6. FOR A PARTICULAR PURPOSE 2 TO THE EXTENT ALLOWED BY LOCAL LAW EXCEPT FOR THE OBLIGATIONS SPECIFICALLY SET FORTH IN THIS WARRANTY STATEMENT IN NO EVENT SHALL ONDAX OR ITS THIRD PARTY SUPPLIERS BE LIABLE FOR DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES WHETHER BASED ON CONTRACT TORT OR ANY OTHER LEGAL THEORY AND WHETHER ADVISED OF THE POSSIBILITY OF SUCH DAMAGES 3 Tothe extent allowed by local law the remedies provided in this Limited Warranty Statement are the customer s sole and exclusive remedies 6 4 Contacting Ondax Ondax Inc 850 E Duarte Rd Monrovia CA 91016 Tel 626 357 9600 Fax 626 357 9321 Web http www ondax com Email sales ondax com
7. Sales related questions please contact the distributor or selling agent from whom the module was purchased 6 3 Ondax Limited Warranty Ondax warrants that all SureLock integrated laser modules RO FCLM LM will be free from defects in material and workmanship for 12 months from the date of shipment This limited warranty covers only those defects that arise as a result of normal use of the product and does not cover any other problems including those that arise as a result of i improper handling maintenance or modification ii operation outside the product s specifications or iii unauthorized modification or misuse If Ondax receives during the applicable warranty period notice of a defect in any product which is covered by this warranty Ondax shall either repair or replace the product at Ondax s option Ondax shall have no obligation to repair replace or refund until the customer returns the defective product to Ondax Any replacement product may be either new or like new provided that it has functionality at least equal to that of the product being replaced Ondax products may contain remanufactured parts components or materials equivalent to new in performance Limitations of Liability 1 TO THE EXTENT ALLOWED BY LOCAL LAW NEITHER ONDAX NOR ITS THIRD PARTY SUPPLIERS MAKES ANY OTHER WARRANTY OR CONDITION OF ANY KIND WHETHER EXPRESS OR IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABILITY SATISFACTORY QUALITY AND FITNESS
8. a9 OND AX Compact Laser Diode Module 115 80040 001 Rev 9 S ONDAX Compact Laser Diode Module User Manual Contents Toalety Precautions doe te deer tra e ree E tae dnt ek bea P TUR Fe HERE vera ve ona ancien 3 2 Application and Features 1 eii tette tete tial ira ede ena La ie ed ieee eaten 5 K SPECHICALLONS EIE TT EE II IET LITTLE Em 5 A Operating Procedures eee et ien nct tenti neta eere thai eg en ea ke ka dk dads e paru ko tha eere pese x a Ma ERR NERE RETE RARO 8 ER T ve Hc E REE ED 15 SST BY er 15 S ONDAX Compact Laser Diode Module User Manual 1 Safety Precautions This instruction manual explains how to use the Compact Laser Diode Module Before use please read this manual thoroughly After reading keep it together with the product for reference when necessary Please retain packaging material in the event the unit is stored or shipped in the future Caution use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure Body of the unit contains labels specifying wavelength and maximum emitted power Recommend following user requirements for Class 3B products according to latest ANSI Z136 1 Standard for the Safe Use of Lasers Use protective eyewear when engineering or other procedural and administrative controls are inadequate to eliminate potential exposure in excess of the MPE
9. age that it cannot interpret it responds ERROR Every controller response is terminated by a carriage return line feed pair ASCII 13 followed by ASCII 10 4 4 4 RS 232 Commands Commands Argument Response Function rip No Tus Return the laser output power in mW rli No Dem Return the present operating current of the laser diode in mA rtt No cde Return the TEC present measured temperature of laser diode in degrees Celsius rti No us s Return the TEC present operating current in mA len No OK Enable laser APC driver Idis No OK Disable laser APC driver lon No OK Turn on the laser emission output power loff No OK Turn off the laser emission output power stt d OK Set the TEC temperature in degrees Celsius Default 22 Degree a ONDAX Compact Laser Diode Module User Manual slc ida OK Set ACC driver current in mA clfp uds OK Calibrate the laser power Set the laser full power value in mW stm No OK Start inner TTL modulation ctm No OK Stop inner TTL modulation tecon No OK Enable TEC control tecoff No OK Shut down TEC control Sps No OK Start APC power scan cps No OK Stop APC power scan slp ms OK Set the laser output power from 0 0 to full power Default Full power rsv No Hi Return the laser system firmware version stont W OK Set inner TTL modulation on time no less than 0 01ms stoff
10. any computer communication or emission of light The power LED on indicates the controller has received power Default operating conditions are stored in onboard flash The TEC activates to stabilize temperature to temperature setpoint Setpoint can be changed via RS232 or push button interface It will take a few seconds depending on the setting point and environmental conditions During this period the status LED will flash rapidly Wait 30 seconds before the laser diode emits the power and the status LED will keep flashing fast Laser controller only operates in constant current mode Status LED flashes according to table above Warning Laser module will emit light 30 seconds after providing power 4 3 Push Buttons and LCD Display The laser controller has 4 push buttons MENU UP DOWN ENTER and a 2x16 LCD alphanumeric information display The pushbuttons are used to change various controller settings and laser operation parameters MENU is used to enter or to exit the menu level UP and DOWN are used for navigation and change values ENTER chooses menu levels and confirms settings e Version display The LCD shows the software version information for 5 seconds when the unit power is on Ondax SN B099999 V3 27 e Entering password if changed from default password of 0000 If password is entered incorrectly for three times the unit would be locked until power is cycled unplu
11. discharge Avoid external damage to the enclosure Use supplied power supply or power supply meeting specifications Do not drop the module or operate it at extreme temperatures or humidity Beware of optical feedback from reflective surfaces Permanent damage to the laser diode is possible S ONDAX Compact Laser Diode Module User Manual 2 Application and Features 2 1 Applications This device is a compact laser diode module with integrated laser diode current driver and temperature control for high precision equipment and instrumentation It plays a pivotal role in testing or manufacturing and can be used in various applications such as Flow Cytometry Confocal Microscopy Protein Crystallography DNA Sequencing Semiconductor Defect Detection Thin Film Analysis High Density Data Storage and Raman Spectroscopy 2 2 Standard Features Plug amp Play Operation ESD Protection Constant Current Driver Adjustable Output Power Adjustable Temperature Setpoint Remote Key Switch with Remote Interlock Optional for OEM customers 3 Specifications Remote Computer Control Capability Built in User Interface Panel Temperature Stabilized LCD Display with Buttons for Adjusting Settings Compact Size OPTICAL Power Stability over 1 hr 196 Laser Noise 10 to 1Mhz RMS 196 Laser Class Class 3B maximum power and wavelength listed on warning labels of the unit Laser Operation CW Spatial Mode
12. dule Cable is included REMOTE INTERLOCK POWE CONNECTOR CONNECTOR INTERLOCK 1 Power on off key switch Located on the front panel of the Remote Key Switch this switch enables users to power the unit on with the turn of a key The unit is inoperable when key is removed 2 Emission indicator This red LED located to the upper right of the front panel lights up when the unit is on to warn of eminent laser emission 3 5 second activation delay The unit does not apply power to the laser module until five seconds after a user has turned the key switch to the on position 4 Remote interlock amp connector This feature is located on the rear panel of the Key Switch The unit will not operate without the interlock intact Interlock needs to be shorted for power to be available for laser diode module Remote Key Switch Procedure e Plug power adapter into Remote Key Switch Box Plug laser module into supplied DB9 2 1mm plug adapter cable e Use key to activate and deactivate power to the laser module After key switch is turned to on position power will be available for the laser module after a 5 second delay e Emission warning light will light up upon key switch turned to on position S ONDAX Compact Laser Diode Module User Manual e Laser system is off when key is in vertical position e Interlock must be shorted for power to be applied to laser module prm mm i
13. g and reconnect power cord S ONDAX Compact Laser Diode Module User Manual Ondax Password 0002 e Wait for temperature stability after the unit power is on Temperature setpoint is based on stored setpoint Display shows actual temperature and TEC current Wait TEC Setup 22 00 C 100 00mA e Wait 30 seconds for temperature stability Display shows time countdown Wait sec 30 0 22 00 C 100 00mA e Main parameter display during normal operation Display different operating parameter e Normal run mode constant current Laser I 100 OmA 22 00 C 200 OmA 100 00mA laser operating current 22 00 C temperature 200 00mA TEC current e The parameter display can be cycled through the following modes by pressing ENTER Temp 22 00 C TEC Cur 200 00mA Current 100 00mA Temp 22 00 C e Error Messages Laser will display appropriate message if it reaches conditions that are unsafe e Laser over current Press MENU and then press ENTER to reset the unit Over Current Shutdown Restart e Over temperature shut down Press MENU and then press ENTER to reset the unit S ONDAX Compact Laser Diode Module User Manual Over temperature Shutdown Restart Switching off e Both the laser and TEC drivers can be
14. r LED LED on indicates laser on Status LED Meaning Rapid flashing 30 ms on 30 ms off aans for temperature to be stable after power Fast flashing 100 ms on 100 ms off Waiting for 30 seconds Flash 1 time 200 ms on 200 ms off every 2 s LED Runni l off unning normally Flash 1 time 200 ms off 200 ms on every 2 s LED Over current shut down on Flash 2 times 20 Oms off 200 ms on every 2 s LED on Over temperature shut down Solid Waiting for settings change using push buttons S ONDAX Compact Laser Diode Module User Manual 4 Operating Procedures 4 1 Standard CW Operation Laser module can be operated with or without RS232 communication port Settings can be accessed via push buttons on the laser module as well as RS232 port User Startup Procedure Properly mount laser module on a heat sink If necessary connect DB9 interface cable Connect power supply Laser Module Startup Process Laser module controller will follow indicate the following process after power on With default shipping configuration of a password of 0000 system will automatically cycle through initialization routine and emit optical power Changing the password from 0000 will cause the system to wait for password prior to completing initialization routine Hence default password of 0000 allows for hands off computer control if needed usage Password other than 0000 would require user input prior to
15. switched off by pressing DOWN while in normal mode TEC LD Operation Enter OFF _ After confirmation the controller stops both drivers and it changes the screen to the following one TEC amp Laser OFF Any key restart The system will restart by pressing any pushbutton Settings Display The setting menu block is selected by pressing MENU in a normal running mode Within the menu block pressing UP or DOWN navigates between menu items Press ENTER to select the item Pressing MENU will exit the setting menu without saving the changes to flash All the settings will go back to the previous setting after the unit is reset or re powered s Set TEC temperature Set TEC Temp 10 50 C 22 00 22 00 The previous set point Press ENTER to change the temperature set point Otherwise press UP or DOWN to change the setting menu After pressing ENTER the unit will enter the parameter setting mode and the cursor will change from S to 2 which is the first digit of the parameter Then press UP or DOWN to change the digit from 0 to 9 or After finished setting this digit press ENTER to move to next digit When you finish setting the last digit and press ENTER the parameter will affect right away then the cursor will revert to S at the same time All the following parameter settings
16. t kd dn OK Set inner TTL modulation off time no less than 0 01ms stsont Vn OK Set power scan on time in ms no less than 0 01 stsofft cu OK Set power scan off time in ms no less than 0 01 SSps OK Set APC power scan step rslp No rcd Return the present laser setting power in mW rclp No G Return the present laser full power rstt No eee Return the TEC set up temperature rstli No ee Return the ACC set up current in mA SSC No OK Save the setting to the flash memory so the laser system can operate in the same setting after repower it rirs No Read laser controller run status 1 Laser controller runs normally 2 Inner TTL modulation 3 Laser power scan 4 Waiting for calibrate laser power 5 Over laser current shutdown 6 TEC over temperature shutdown 7 Waiting temperature stable 8 Waiting 30 seconds smlc uada OK Set the maximum laser diode current in mA if the current is over the limit the laser will shut down ricm No S Read the maximum laser current in mA reset No OK Reset the laser controller S ONDAX Compact Laser Diode Module User Manual rsn No meee Return the laser controller serial number Icen No OK Enable ACC laser driver Icdis No OK Disable ACC laser driver Icon No OK Turn on ACC laser driver Icoff No OK Turn off ACC laser driver 4 5 Remote Key Switch Operation Optional Only for OEM Customers EMISSION INDICATOR Em DB9 Connector to mo
17. ulation or Default Settings change only takes effect when exiting the setting menu Internal Modulation is unsupported and should not be used 6 ONDAX Compact Laser Diode Module User Manual e Save to flash and exit the setting menu Save to Flash and Exit All the setting parameters will be saved to flash memory So the laser will keep this setting even when the unit is reset or repowered 4 4 Operation via Communications Port The laser system includes complete remote control capability through RS232 All RS232 commands are available after laser system auto start 4 4 1 Baud rates and serial port settings Each controller is shipped from the factory with a fixed 9600 baud which cannot be changed The other serial port parameters are 8 data bits 1 stop bit and no parity A hardware flow control is not supported 4 4 2 Command formatting and termination characters Each command to the controller must be terminated by a carriage return line feed pair ASCII 13 followed by ASCII 10 All commands are case sensitive Command arguments must be delimited by a single colon character ASCII 58 4 4 3 Handshaking Under no circumstances will the controller initiate communication It only transmits characters in response to a message Every message to the controller generates a response either a numerical value or the acknowledgment string OK In the event that the controller receives a mess
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