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THORLABS LDM21, User Manual

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LDM21 
5.6 mm/9 mm  
Laser Diode Mount 

User Guide 

 

 

Summary of Contents for LDM21

Page 1: ...LDM21 5 6 mm 9 mm Laser Diode Mount User Guide...

Page 2: ......

Page 3: ...5 3 5 TEC Controller Connections 6 3 6 Thermistor Data 7 3 7 Mounting Other Accessories 9 Chapter 4 Operation 10 4 1 Safe Operating Area 10 4 2 Maintaining the LDM21 11 Chapter 5 Troubleshooting 12 C...

Page 4: ...ption Direct Current Alternating Current Both Direct and Alternating Current Earth Ground Terminal Protective Conductor Terminal Frame or Chassis Terminal Equipotentiality On Supply Off Supply In Posi...

Page 5: ...mount are 4 40 tapped holes on 30 mm centers for mounting any number of Thorlabs cage assembly products There is also a 8 32 tapped hole on the bottom surface to allow the unit to be post mounted The...

Page 6: ...2 56 screws from the laser mounting flange and remove the flange 3 Determine the laser pin configuration from the laser diode manufacturer s data sheets and set the LD Laser Diode and PD Photodiode s...

Page 7: ...case at ground potential therefore this common pin will be inserted into either the 12 o clock or the 6 o clock position of the laser connector Locate the isolated laser pin and insert it in the 3 o...

Page 8: ...The LDM21 is compatible with all Thorlabs LDC LD controllers and ITC series combination controllers LD and TEC Appropriate cables with DB9 connectors are included with Thorlabs controllers and ensure...

Page 9: ...socket when the PD Polarity Switch is set to AG Anode Grounded 5 Interlock Return This pin is the return side of the Interlock circuitry Pin 1 and 5 are shorted internally in the LDM21 6 N A 7 Laser...

Page 10: ...turn pin 4 TEC This pin is connected to the positive terminal of the TEC element 5 TEC This pin is connected to the negativeterminal of the TEC element 6 N A 7 AD592 The negative terminal of the AD592...

Page 11: ...the resistance value at a reference temperature which is room temperature in this case T is the temperature in K Constants Value Unit A 14 6337 B 4791 842 K C 115334 K2 D 3 730535E 06 K3 A1 3 354016E...

Page 12: ...s mounts This is most often used for mounting aspheric collimating optics available separately from Thorlabs Also included are four 4 40 tapped holes mounted on 30 mm centers for attaching our cage as...

Page 13: ...s intended to be operated at a fixed temperature set point of 25 C but can be operated as low as 20 C as long as the input power to the laser diode input current x LD voltage does not exceed the value...

Page 14: ...leaned by wiping with a soft damp cloth If you suspect a problem with your LDM21 please call Thorlabs Technical Support and an engineer will be happy to assist you 0 100 200 300 400 500 600 700 20 22...

Page 15: ...the rear panel of your LDC series laser diode controller The laser diode is installed into the wrong pins on the laser diode socket Refer to Fig 2 see page 5 for the correct orientation of the laser...

Page 16: ...8 32 and M4 Threaded Mounting Holes Laser Specifications Lasers Supported 5 6 mm and 9 mm Max Laser Current 500 mA1 Max Laser Input Power 600 mW1 Laser Pin All LD Packages Switch Selectable Configurat...

Page 17: ...ical Drawing Figure 5 Mechanical Drawing of the LDM21 1 75 1 75 0 88 0 88 30MM CAGEASSEMBLY MOUNTING HOLES 4 40 4 PLACES 0 88 0 12 TEC CONNECTION MALE DB9 1 66 0 88 0 12 LASER DIODE CONNECTION FEMALE...

Page 18: ...roducts such as Pure OEM products that means assemblies to be built into a unit by the user e g OEM laser driver cards Components Mechanics and optics Left over parts of units disassembled by the user...

Page 19: ...nd South America Thorlabs Inc sales thorlabs com le techsupport thorlabs com Europe Thorlabs GmbH europe thorlabs com France Thorlabs SAS SA sales fr thorlabs com Japan Thorlabs Japan Inc sales thorla...

Page 20: ...www thorlabs com...

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