Integrate TEC Lockout Circuit to Protect LD (Can Be Disabled)
#8-32 and M4 Tapped Holes for Easy Mounting on a Post
The TCLDM9 mount by Thorlabs is ideal for temperature-controlled operation of all 3-pin and 4-pin laser diodes in 9 mm (TO18) and 5.6 mm (TO46) packages that have A, B, or C pin configurations, as well as our fiber coupled pigtailed lasers. It is also compatible with some of our diodes with D pin configurations (see the Specs Tab for details). It includes a Bias-T for RF modulation of the laser current up to 500 MHz. The TCLDM9 can be easily integrated into any existing optical setup. The bottom surface of the TCLDM9 provides 8-32 and M4 mounting holes, and its front plate is equipped with tapped holes to mount our ER Rods of the Cage Plate Series mounting components.
A laser diode can be changed quickly and easily. It is as simple as inserting the laser diode into the socket according to the imprinted pin assignment and fastening the clamp ring with two screws. The diode socket is located very close to the front of the cold plate making the connection of short lead devices easier. The pass-through design of the socket lets you install long lead diodes (up to 3/4") without trimming.
The LTC100 Series Kit includes a current controller, temperature controller, and the TCLDM9 mount featured on this page. In addition, the kit includes a mounted aspheric lens, ESD wrist strap, aspheric lens adapter, and two spanner wrenches for tightening the adapter and aspheric lens. The kit price is 10% lower than the total price of the individual components.
Application Idea: To collimate or focus the laser diode output, place a mounted aspheric lens in a compatible SM1 (1.035"-40) threaded lens cell adapter. For short focal length lenses (3 to 5 mm) choose an adapter like the S1TM09 that can thread into the front plate of the TCLDM9. The 30 mm cage system and lens tube compatibility make it possible to easily mount almost any collimation optic; please call our technical support department for help in choosing the best solution for your application. The scrolling images near the top of the page provide quick links to many of the products commonly used with the TCLDM9.
The TCLDM9 mount can be adapted to the polarity of the laser diode and monitor diode by miniature switches located at the top of the mount. User protection features include an LED indicating an enabled laser located along the top of the mount and a remote interlock connector located on the side.
Laser protection features include optional grounding configurations, and the 'TEC Lockout' circuit* (also included in our 14-Pin Butterfly Laser Diode Mounts) that prevents enabling the laser unless the TEC controller is active. The built-in TE cooler enables temperature-controlled operation of the laser diode. The clamp ring protects the laser diode against air drafts, thus temperature stabilities of about 10mK can be achieved.
*TEC Lockout only functions with Thorlabs, Inc. laser and TEC controllers and can be easily bypassed if not required.
TCLDM9 Specifications
Laser Diode Package*
5.6 mm & 9 mm
Supported Pin Configurations
A, B, C, and Some D
Maximum Laser Current
2 A
Polarity of Laser Diode
Selectable
Polarity of Monitor Diode
Selectable
Maximum RF Power
200 mW, RMS
RF Input Impedence
50 Ω
Modulation Frequency (Bias-T)
0.2 to 500 MHz
Maximum TEC Current
5 A
Maximum TEC Voltage
4 V
TEC Heating/ Cooling Capacity
20 W
TEC Interface
DB9, Male
Temperature Sensor
AD592, 10 k Thermistor
Temperature Range (@25 °C w/ 2 A TEC Current)
5 to 70 °C
Pin Configurations
* The TCLDM9 is compatible with all Thorlabs 5.6 mm and 9 mm diodes that have A, B, or C pin configurations. In addition, it is compatible with most of our currently available diodes with D pin configurations, but not all. For example, it is not compatible with the HL6548FG laser diode due to the setup of the internal circult, which is shown below. Here PD and LD represent the photodiode and laser diode, respectively. With this configuration, it is not possible to apply the correct voltage bias across both diodes simultaneously using the TCLDM9 laser diode mount.
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Posted Comments:
Poster: Adam
Posted Date: 2010-05-07 16:14:00.0
A response from Adam at Thorlabs to wccox: You would be supplying an RF voltage. The way the T-Bias works is that there is a filter created between the RF input and the LD controller. On the laser controller side is an inductor that allows only low BW and DC level currents to flow through to the laser diode. The RF side includes a 50 Ohm resistor and a capacitor in line with the RF signal. The capacitor allows only the higher BW AC signal to pass to the LD. The 50 Ohm resistor terminates the cable but also allows a voltage to be used to drive the RF input. The current can be calculated using V=IR. Care must be taken when using this input though since it directly drives the laser diode. The LD controller current is added to the RF input signal and both applied to the LD. Care must be taken that the input in not overdriven. On page 8 of the TCLDM9 manual there is detailed operating instructions for using the RF input and how to set it up. We are also updating the website to include this information. Please start with a very small voltage to be safe and work up to what is needed.
Poster: wccox
Posted Date: 2010-05-07 13:44:08.0
Its not quite clear to me how the Bias-T works - is it a RF voltage source to current conversion, or does the input to the Bias-T need to be a RF current source? i.e. Can I modulate the lasers current via a voltage waveform into the bias-T?
Poster: jhartmann
Posted Date: 2009-12-14 11:21:58.0
A response from Juergen at Thorlabs to tony :
"temperature stability or the power and wavelength stability" cannot be stated for TCLDM9 only - all depends on the used Laser Diode Current and Temperature Controllers, as well as on the laser diode itself.
We do specify for LD and TE controllers the stability; the rest is a question of environmetal stability and the laser itself.
Poster: tony
Posted Date: 2009-12-14 10:04:07.0
The spec. does not include the temperature stability or the power and wavelength stability that can be achieved.
Poster: hudw06
Posted Date: 2008-05-25 06:01:32.0
The CAD file (1981-E0W.dxf) is invalid. I cant open it. Could you send it to me if it is possible. Thank you very much.
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TCLDM9
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TE-Cooled Mount For 5.6 & 9 mm Lasers
