THORLABS LM9LP Bedienungsanleitung
LM9LP
Pigtailed Laser Mount
Operating Manual
Pigtailed LD Mount
20913-D02 Rev F, June 23, 2014 Page 2 www.thorlabs.com
Table of Contents
Part 1. Safety ............................................................................................................................................3
Part 2. Description ...................................................................................................................................4
Part 3. Setup .............................................................................................................................................5
3.1. General ..................................................................................................................................................... 5
3.2. Special Note for 4-pin Laser Diodes ....................................................................................................... 7
3.3. Special Note for Laser Diodes wit out a Monitor P otodiode ............................................................ 7
3.4. Laser Diode Current Controller Connection ........................................................................................ 8
3.5. Using a T ird-Party Laser Controller ................................................................................................... 9
3.6. TEC Controller Connection.................................................................................................................. 10
3.7. TEC Lockout and Ground Jumpers .................................................................................................... 11
Part 4. Operation ...................................................................................................................................12
4.1. General ................................................................................................................................................... 12
4.2. RF Modulation ....................................................................................................................................... 12
4.3. Status and Interlocks ............................................................................................................................. 13
4.4. Maintaining t e LM9LP ....................................................................................................................... 13
Part 5. Making Safety Interlock Connections .....................................................................................14
Part 6. Troubles ooting ........................................................................................................................15
Part 7. Specifications .............................................................................................................................16
Part 8. T ermistor Data ........................................................................................................................18
Part 9. Mec anical Drawing .................................................................................................................19
Part 10. Regulatory .................................................................................................................................20
10.1. Waste Treatment is Your Own Responsibility.................................................................................... 20
10.2. Ecological Background .......................................................................................................................... 20
Part 11. T orlabs Worldwide Contacts .................................................................................................21
Pigtailed LD Mount
20913-D02 Rev F, June 23, 2014 Page 3 www.thorlabs.com
Part 1. Safety
ll statements regarding safety of operation and technical data in this instruction manual
will only apply when the unit is operated correctly.
WARNING
T is unit must not be operated in explosive environments
WARNING
Avoid Exposure – Laser Radiation Emitted from apertures
Pigtailed LD Mount
20913-D02 Rev F, June 23, 2014 Page 4 www.thorlabs.com
Part 2. Description
•Designed for Thorlabs' Ø5.6 mm (TO-46) and Ø9 mm (TO-18) Pigtailed Laser
Diodes, Single Mode, Polarization Maintaining, or Multimode
•TEC Element Prolongs LD Life and Stabilizes Output Power and Wavelength
•Clamshell Design Eliminates Thermal Gradients cross Diode
•Bias-T dapter for RF Modulation of Laser Current >1 GHz
Thorlabs' LM9LP is an LD and TEC mount designed for use with all of our 3- and 4-pin
pigtailed diodes1. The compact housing protects the pigtail from physical damage, while
also offering excellent thermal characteristics. Two 1/4" through holes can be used for
securing the mount to an optical table with 1/4"-20 or M6 cap screws.
When operating a pigtailed laser diode, temperature control is highly recommended to
stabilize the laser's power and wavelength, while also prolonging the life of the laser.
Typical laser diode mounts rely on contact between the diode and the mount's cold plate
for heat transfer. Pigtailed laser diodes are often recessed in the pigtail's housing, offering
poor contact with the cold plate of standard laser diode mounts. The LM9LP, however, is
specifically designed for operating pigtailed laser diodes. Its clamshell design reduces
thermal gradients across the diode, while its cold block cradles the pigtail housing for
excellent contact and heat transfer. Performance can be further improved by using
thermal grease around the pigtail package within the clamshell.
DB9 connections interface with all of Thorlabs' LD Current Controllers and TEC
Controllers. n SM connector allows access to a Bias-T circuit for RF modulation of
the laser's drive current (200 kHz to >1 GHz). For modulation below 200 kHz, current
should be modulated through the laser diode controller. remote interlock jack is
provided for the connection of safety devices such as shutters and warning signs.
Figure 1: Supported Pin Style
LM9LP Contents:
•Pigtail Mount
•S7060R LD Socket
•HK564 5/64" Hex
Key
•Operating Manual
1 Due to the variety of fiber pigtailed laser diode packages offered by other companies, this mount is
only designed for use with Thorlabs products. Thorlabs offers a laser diode pigtailing service; please
contact Tech Support for details.
Style A
Case
LD PD LD PD LD PD
LD PD LD
Case Case
Case
Case
Style B Style C
Style D Style E
LD
Case
Style H
Pigtailed LD Mount
20913-D02 Rev F, June 23, 2014 Page 5 www.thorlabs.com
Part 3. Setup
3.1. General
• Unpack the laser mount and remove the two 2-56 socket head screws from the top
cover using a 5/64" hex driver.
• Remove the two 2-56 socket head screws with a 5/64" hex driver from the copper
cold plate cover.
• Remove the two 2-56 socket head screws with a 5/64" hex driver from the
mounting flange.
• Determine the laser pin configuration from the laser diode manufacturer’s data
sheets and set the LD (Laser Diode) and PD (Photodiode) switches on the side of
the LM9LP according to the diagram and picture below.
Figure 2:
Polarity Switch Settings
Style A
Case
LD PD
LD PD
LD PD
LD
Case
Case
Case
Style B
LD PD
Case
Style C
Style D
Style E
LD
Case
Style H
LD
LD
LD
PD
LD
LD
AG
CG AGCG AG
CG AG
CG
AG
CG AG
CG
AG
CG AG
CG
AG
CG AGCG
AG
CG AGCG
LD
PD
PD
PD
PD
N/A
PD
N/A
Switch Position
(Black Square)
Pigtailed LD Mount
20913-D02 Rev F, June 23, 2014 Page 6 www.thorlabs.com
•The four sockets of the laser diode connector are through hole type sockets.
•The laser connector may require an S7060R socket to be used when connecting a
laser diode with short leads. This adapter is included with Thorlabs pigtails.
•Most laser diodes are three pins with the case tied to one of the laser pins and also
to one of the photodiode pins. The other laser and photodiode pin will be isolated
from the case. The LM9LP was designed to operate the laser case at ground
potential therefore this common pin will be inserted into either of the holes marked
‘G’ below. Insert the isolated laser pin in the position marked LD. The isolated
photodiode should now be in the position marked PD.
Figure 3: Laser Diode Socket
•Thread the two 2-56 socket head screws into the pigtail flange, securing it to the
mounting flange. Next, replace the copper cold plate cover and tighten its two 2-56
socket head screws. Lastly, reattach the cover plate using the two 2-56 socket head
screws.
Pigtailed LD Mount
20913-D02 Rev F, June 23, 2014 Page 7 www.thorlabs.com
3.2. Special Note or 4-pin Laser Diodes
The LM9LP also supports 4-pin laser diodes. Insert the laser into the 4-pin socket and
note which laser pin is in the 12 o’clock position (laser anode or cathode). lso, note
which photodiode pin is in the 6 o’clock position (anode or cathode). The mount will tie
the laser and photodiode pins located at 9 o’clock and 3 o’clock together and also to
ground. By noting which polarity pins are inserted in the socket, you can convert the 4-
pin layout to one of the 3-pin layouts in Figure 2 above. Set the LD and PD polarity
switches accordingly.
Laser diodes with pin style F are not compatible with this mount. The pins are oriented
across from each other and will not align properly in the mount.
Figure 4: Pin Style F
3.3. Special Note or Laser Diodes without a Monitor Photodiode
Laser diodes without a monitor photodiode will also work with the LM9LP. The laser
diode pins must be positioned between the LD and G positions. Some 2 pin packages will
not align with the laser diode socket, but 3 pin versions can be mounted similar to typical
laser diodes with photodiodes.
LD
PD
Case
Style D
Pigtailed LD Mount
20913-D02 Rev F, June 23, 2014 Page 8 www.thorlabs.com
3.4. Laser Diode Current Controller Connection
Using the Thorlabs LDC/ITC Series Laser Controllers:
• The LM9LP is compatible with all Thorlabs LDC LD controllers and ITC series
combination controllers (LD and TEC). ppropriate cables with DB9 connectors
are included with Thorlabs controllers and ensure that the controllers cannot be
connected incorrectly. dditionally, these controllers have built-in protection
circuitry that protects the laser when not in use.
• The nomenclature for the Laser Diode polarity switch on the LDC40xx and
ITC40xx drivers and the LM9LP are consistent with each other. For example, if
the laser polarity on the driver is set to “ G” (anode grounded), then the LD
polarity switch on the LM9LP should also be set to G, and so on.
• The nomenclature for the Photo Diode polarity switch on the LDC40xx/80xx and
ITC series drivers and the LM9LP is as follows: The photodiode polarity switch on
the LM9LP must always be set to “CG”. The photodiode polarity should be set
with the internal Laser controller switch only. For more information on how to set
Polarity settings on the Laser controller, please refer to the appropriate Laser
Controller manual.
Pigtailed LD Mount
20913-D02 Rev F, June 23, 2014 Page 9 www.thorlabs.com
3.5. Using a Third-Party Laser Controller
When using a third-party controller, a custom cable will have to be made to properly
interface to the laser mount. Please refer to the table below for laser connections.
Figure 5: LD Controller DB9 Connection
LD
Pin Signal Description
1
Interlock and
Status Pin
(LDC Specific)
This pin is the input to the LD Status indicator and interlock circuits.
When using Thorlabs’ LDC controllers, no external circuitry is
required. To use these features with third-party controllers, please
refer to page 13.
5 Interlock and
Status Return This pin is the return side of the Status and Interlock circuitry.
7 Laser Diode
Cathode
This pin is connected to the 12 o’clock pin on the laser socket when
the LD polarity switch is set to G (anode grounded). Otherwise it is
floating.
8 Laser Diode
node
This pin is connected to the 12 o’clock pin on the laser socket when
the LD polarity switch is set to CG (cathode grounded). Otherwise it
is floating.
3 Laser Ground
(Case)
This pin is connected to the 9 o’clock and 3 o’clock pins on the laser
socket and corresponds to the settings of the LD and PD polarity
switches. i.e., If the LD and PD switches are set to G, then this pin
grounds the anode of the laser diode and photodiode.
2 Photodiode
Cathode
This pin is connected to the 6 o’clock pin on the laser socket when the
PD polarity switch is set to G (anode grounded). It is attached to
ground and the 9 o’clock and 3 o’clock pins on the laser socket when
the PD polarity switch is set to CG (cathode grounded).
4 Photodiode
node
This pin is connected to the 6 o’clock pin on the laser socket when the
PD polarity switch is set to CG (cathode grounded). It is attached to
ground and the 9 o’clock and 3 o’clock pins on the laser socket when
the PD polarity switch is set to G (anode grounded).
6
Laser Diode
Voltage
(Cathode)
This pin is connected to LD interface pin 7, through a 499 Ω resistor,
when the LD polarity switch is set to G (anode grounded). It is
attached directly to LD interface pin 3 when the LD polarity switch is
set to CG (cathode grounded).
9 Laser Diode
Voltage ( node)
This pin is connected to LD interface pin 8, through a 499 Ω resistor,
when the LD polarity switch is set to CG (cathode grounded). It is
attached directly to LD interface pin 3 when the LD polarity switch is
set to G (anode grounded).
Pigtailed LD Mount
20913-D02 Rev F, June 23, 2014 Page 10 www.thorlabs.com
3.6. TEC Controller Connection
Using Thorlabs’ TED Series TEC Controllers:
• The LM9LP is compatible with all Thorlabs TED series temperature controllers
and ITC series combination controllers (LD and TEC). The TED series is shipped
with a mating DB9 cable that plugs directly into the controller and laser mount.
Using the cable supplied with the TED, the controller cannot be connected
incorrectly. Simply connect the cable included with the TED to the laser mount
and to the controller.
Using a Third-Party TEC Controller:
• When using a third-party controller, a custom cable will have to be made to
properly interface to the laser mount. Please refer to the table below for
connections.
Figure 6: TEC Controller DB9 Connection
TEC Pin
Signal Description
4 +TEC This pin is connected to the positive terminal of the TEC.
5 -TEC and TEC
Lockout (-)
This pin is connected to the negative terminal of the TEC element,
and also is common to the cathode of the photo-relay of the TEC
lockout circuit – refer to the Status and Interlock section of this
manual.
1 TEC Lockout (+)
This pin is connected to the anode of the photo-relay side of the TEC
lockout circuit. When using Thorlabs’ TED Series, no external
circuitry is required. To use these features with third-party
controllers, please refer to the Status and Interlock section of this
manual.
2 +Thermistor The 10 kΩ @ 25 °C NTC thermistor (provided for temperature
feedback).
3 -Thermistor The thermistor return pin.
7 D592 (-)
The negative terminal of the D592 temperature transducer. When
using Thorlabs’ TED Series, no external circuitry is required. To use
this device with third-party controllers, it must be properly biased.
Refer to nalog Devices D592 Data for application information.
9 D592 (+) The positive terminal of the D592.
6 NC Unused
8 NC Unused
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