LDM
4872
Quantum
Cascade Laser
Mount

Specifications
Laser Packages:

Product Features
C-Block, Alpes COC, andcustomer proprietary QCLpackages

Supports C-Block, COC,and customer proprietary
QCL packages

CONNECTORSCW Laser Diode Current
Case Temperature Control
Vacuum/Nitrogen Purge

Cooling Water Inlet and Outlet

DB9, female
Hybrid D-sub, 7W2, male2 x 1/8” NPT female,
supplied with compression
fittings for 1/4” OD tubing
installed1/4” barbed fittings

Compatible with the LDX-3232
CW QCL Driver
Active temperature control from-30oC to 30oCTEMPERATURE CONTROL
Temperature Control
Sensor TypeMaximum TEC Current
Maximum Thermal Load
Temperature Range1
Contact Thermal Resistance2
Accuracy
Stability3

Solid State, Thermoelectric
Calibrated 10 K thermistor
10A10W-30oC to 30oC
0.10oC-in2*W-1+0.5oC<0.005oC

Ports for vacuum evacuation or
nitrogen purge
Optional XYZ stage with multiple
ZnSe lens options

GENERAL
Size (L x W x H)
Beam Height
Weight4
Regulatory Compliance
Water Pressure Drop

11.4 cm x 10.1 cm x 16.5 cm
4.5” x 4.0” x 5.75”
101.6 mm (4.0”)
1.7 kg (3.8 lb.)
RoHS, CE
10 PSI at 3.5 LMP

The LDM-4872 Quantum Cascade Laser Mount provides
convenient mounting for quantum cascade lasers in a vacuum
or nitrogen purged environment. The 4872 is offered withstandard mounting plates for C-Mount (C-Block), Alpes COC,and customer proprietary quantum cascade lasers. A wide
temperature control range is accomplished by an integrated
thermoelectric module and a high performance water-cooled
cold plate which provides for an active control range of -30oC to30oC with heat loads up to 10W.
Fixture design and precision machining result in low,
repeatable thermal resistance between the QCL and LDM-4872
minimizing the temperature difference between the laser andthe fixture.
The LDM-4872 mount is compatible with ILX Lightwave
current sources and temperature controllers through interconnect
cabling for quick setup. Optical table mounting is made possible
through ANSI and metric spaced mounting holes on the baseof the mount.

LDM-48721X XYZ STAGE
XY Stage
TravelSensitivity
Z Stage
TravelSensitivity
Lens
Diameter
Effective Focal Length
Material
Optional AR CoatingsDifferential adjustment screw, locking
3.0 mm318 m/rev coarse, 24 m/rev fine

Back View of LDM-4872

5.0 mm397 m/rev
Aspheric
6.5 mm
4.0 mmMolded chalcogenide glass
2-3 m, 3-5 m, 7-14 m

LDM-487212 WINDOW ASSEMBLY
Minimum Distance to Front Facet
5.8mm
Window
Dimensions
12.7 mm diameter, 3 mm thickness
Material
Zinc Selenide, IR coated

ORDERING INFORMATION
LDM-4872
LDM-487212
LDM-487213
LDM-4030
LDM-4031
LDM-4032

NOTES
1. Minimum temperature at 10W, 10oC cooling water, 2 LPM flow rate
2. CTR = (Laser case temperature - mount temperature) / laser waste heat
3. Stability measured at -25oC with a 5W load under 100 mTorr vacuum using
LDT-5980 temperature controller.
4. Weight with XYZ stage

LDM-4033
LDM-487201
LDM-487202

QCL Mount, Water-Cooled Base
Mid-IR Window
XYZ Stage and Lens
6.5mm diameter, 4.0mm FL Mid-IR Lens, 80% transmission
6.5mm diameter, 4.0mm FL Mid-IR Lens, AR Coating 2-3 m,
95% transmission
6.5mm diameter, 4.0mm FL Mid-IR Lens, AR Coating 3-5 m,
95% transmission
6.5mm diameter, 4.0mm FL Mid-IR Lens, AR Coating 7-14 m,
95% transmission
C-Block (C-Mount) Mounting Block
Alpes Mounting BlockIn keeping with our commitment to continuing improvement, ILX Lightwave reserves the rightto change specifications without notice or liability for such changes.

For information call
P.O. Box 6310, Bozeman, MT 59771 • FAX: 406-586-9405

www.ilxlightwave.com

1-800-459-9459
International Inquiries: 406-556-2481
email: sales@ilxlightwave.com

Rev02.051910

Convenient Mounting for
Quantum Cascade Lasers

LDM4872
QuantumCascade Laser
MountLDM4872

LDM
4872

LDX-3232

LDM-4872

LDT-5980

Quantum
Cascade Laser
Mount

Temperature stability of better than +0.005oC can be achievedby combining the LDM-4872 with the LDT-5980 temperature
controller and LDT-53500 series thermoelectric chillers.

CONVENIENT MOUNTING OF QCLACTIVE TEMPERATURE CONTROLThe LDM-4872 is designed to support various QCL
manufacturers’ devices including C-Mount (C-Block),
Alpes COC, and customer proprietary QCL packages.
Careful attention to the design of the optional XYZstage with MID-IR lens and optional MID-IR window
allow the 4872 to be operated in either a vacuum
or nitrogen environment. Contact an ILX Lightwave
sales engineer if you have any questions concerning
mounting of your QCL package to the 4872.

The LDM-4872 comes with an integrated 120W TEC
and water-cooled cold plate. The high power TEC has
the thermal performance to dissipate the waste heatfrom inefficient quantum cascade lasers over a wide
temperature range of -30oC to 30oC with thermal loads
up to 10W.

PRECISION XYZ STAGE AND MID-IR LENSOPTIONThe optional XYZ stage with lens provides preciseadjustment even when the LDM-4872 is under vacuum.
Precision differential adjustment screws for the X and Y
axis provide 25µm/rev of fine adjustment. The knurled lens
cartridge has 64 threads per inch for precise Z adjustment.
For your specific wavelength we have four standard
aspheric 6.5mm lens options to cover a wide MID-IR
wavelength range. Please contact an ILX Lightwave sales
engineer to discuss our lens options.

Quantum
Cascade Laser
Mount
XYZ Stage

ZINC SELINDE WINDOW OPTION
For quantum cascade lasers not requiring collimation aMID-IR window is available. The QCL output is located 1.5mm from the 12.7mm diameter ZnSe window.

EASY CONNECTIONS FOR QUICK SET UP
The LDM-4872 is compatible with most ILX current
sources including the LDX-3232 High Compliance Laser
Diode Driver. Additionally, the LDX-4872 is compatible
with ILX temperature controllers. All connections
including electrical, water, and vacuum/nitrogen purge areconveniently located on the back of the LDM-4872.
Standard interconnect cables interface with connectors forlaser current and case control on the mount.

OPTICAL TABLE MOUNTINGREPEATABLE, LOW THERMALRESISTANCE

C-Block Mounting Block

Careful attention to the LDM-4872’s mechanical design
results in a low thermal resistance between the quantum
cascade laser and the mounting plate. Torquing thedevice to the recommended value provides constantand repeatable clamping pressure on the package. Low
thermal resistance eliminates temperature measurementinconsistency which ensures the QCL is being operated
at a safe temperature.

Optical table mounting is made possible through standard
1” spaced mounting holes on the base of the mount.
Additionally, the LDM-4872 is designed for integration into
optical test systems with unobstructed access to the frontof the quantum cascade laser mount.

Zinc Selinde Window

PUT OUR EXPERTISE TO WORKILX Lightwave is a recognized world leader in Laser
Diode Instrumentation and Test Systems. Our products
are not only renowned for their reliability, quality, andvalue; they’re backed by industry-leading after sales
support. For more information about the LDM-4872
Quantum Cascade Laser Mount, and our complete
family of Laser Diode Instrumentation and TestSystems, call us today or visit www.ilxlightwave.com.

LDM
4872

LDM
4872

LDX-3232

LDM-4872

LDT-5980

Quantum
Cascade Laser
Mount

Temperature stability of better than +0.005oC can be achievedby combining the LDM-4872 with the LDT-5980 temperature
controller and LDT-53500 series thermoelectric chillers.

CONVENIENT MOUNTING OF QCLACTIVE TEMPERATURE CONTROLThe LDM-4872 is designed to support various QCL
manufacturers’ devices including C-Mount (C-Block),
Alpes COC, and customer proprietary QCL packages.
Careful attention to the design of the optional XYZstage with MID-IR lens and optional MID-IR window
allow the 4872 to be operated in either a vacuum
or nitrogen environment. Contact an ILX Lightwave
sales engineer if you have any questions concerning
mounting of your QCL package to the 4872.

The LDM-4872 comes with an integrated 120W TEC
and water-cooled cold plate. The high power TEC has
the thermal performance to dissipate the waste heatfrom inefficient quantum cascade lasers over a wide
temperature range of -30oC to 30oC with thermal loads
up to 10W.

PRECISION XYZ STAGE AND MID-IR LENSOPTIONThe optional XYZ stage with lens provides precise
adjustment even when the LDM-4872 is under vacuum.
Precision differential adjustment screws for the X and Y
axis provide 25µm/rev of fine adjustment. The knurled lens
cartridge has 64 threads per inch for precise Z adjustment.
For your specific wavelength we have four standard
aspheric 6.5mm lens options to cover a wide MID-IR
wavelength range. Please contact an ILX Lightwave sales
engineer to discuss our lens options.

QuantumCascade Laser
Mount
XYZ Stage

ZINC SELINDE WINDOW OPTION
For quantum cascade lasers not requiring collimation aMID-IR window is available. The QCL output is located 1.5
mm from the 12.7mm diameter ZnSe window.

EASY CONNECTIONS FOR QUICK SET UP
The LDM-4872 is compatible with most ILX current
sources including the LDX-3232 High Compliance Laser
Diode Driver. Additionally, the LDX-4872 is compatible
with ILX temperature controllers. All connections
including electrical, water, and vacuum/nitrogen purge areconveniently located on the back of the LDM-4872.
Standard interconnect cables interface with connectors forlaser current and case control on the mount.

OPTICAL TABLE MOUNTINGREPEATABLE, LOW THERMALRESISTANCE

C-Block Mounting Block

Careful attention to the LDM-4872’s mechanical design
results in a low thermal resistance between the quantum
cascade laser and the mounting plate. Torquing thedevice to the recommended value provides constantand repeatable clamping pressure on the package. Low
thermal resistance eliminates temperature measurementinconsistency which ensures the QCL is being operated
at a safe temperature.

Optical table mounting is made possible through standard
1” spaced mounting holes on the base of the mount.
Additionally, the LDM-4872 is designed for integration into
optical test systems with unobstructed access to the frontof the quantum cascade laser mount.

Zinc Selinde Window

PUT OUR EXPERTISE TO WORKILX Lightwave is a recognized world leader in Laser
Diode Instrumentation and Test Systems. Our products
are not only renowned for their reliability, quality, andvalue; they’re backed by industry-leading after sales
support. For more information about the LDM-4872
Quantum Cascade Laser Mount, and our complete
family of Laser Diode Instrumentation and TestSystems, call us today or visit www.ilxlightwave.com.

LDM4872
Quantum
Cascade Laser
MountSpecifications
Laser Packages:

Product Features
C-Block, Alpes COC, andcustomer proprietary
packages

Supports C-Block, COC,and customer proprietary
QCL packages

CONNECTORSCW Laser Diode Current
Case Temperature Control
Vacuum/Nitrogen Purge

Cooling Water Inlet and Outlet

DB9, female
Hybrid D-sub, 7W2, male2 x 1/8” NPT female,
supplied with compression
fittings for 1/4” OD tubing
installed1/4” barbed fittings

Back View
of LDM-4872

TEMPERATURE CONTROL
Temperature Control
Sensor TypeMaximum TEC Current
Maximum Thermal Load
Temperature Range1
Contact Thermal Resistance2
Accuracy
Stability3

Solid State, Thermoelectric
Calibrated 10 K thermistor
10A10W-30oC to 30oC
0.10oC-in2*W-1+0.5oC<0.005oC

Size (L x W x H)

11.4 cm x 10.1 cm x 16.5 cm
4.5” x 4.0” x 5.75”
101.6 mm (4.0”)
1.7 kg (3.8 lb.)
RoHS, CE
10 PSI at 3.5 LMP

Beam Height
Weight4
Regulatory Compliance
Water Pressure Drop

LDM-487213 XYZ STAGE
XY Stage
TravelSensitivity
Z Stage
TravelSensitivity

Differential adjustment screw, locking
3.0 mm318 m/rev coarse, 25 m/rev fine
5.0 mm397 m/rev

LDM-403x LENSLens
Diameter
Working DistanceOuter Diameter
Numerical Aperture5
Effective Focal Length
Material
Optional AR Coatings

Aspheric
2.5 mm3.05 mm
6.5 mm0.56
4.0 mmMolded chalcogenide glass
LDM-4030: uncoated
LDM-4031: 1.75 - 3 m
LDM-4032: 2-6 m
LDM-4033: 7-14 m

LDM-487212 WINDOW ASSEMBLY
Minimum Distance to Front Facet
5.8mm
WindowDimensions
12.7 mm diameter, 3 mm thickness
MaterialZinc Selenide, IR coated

LDM-487201 C-MOUNT MOUNTING BLOCK
C-Mount
Package Width: 6.35 +/- 1 mm
Flying Lead Length: 7.75 +/- 1 mm
Package Depth: 2.18 mm - 3.16 mm

LDM-487202 ALPES MOUNTING BLOCK
Laser Package
Dimensions

Alpes NS and ST
Package Width: 19 mm
Package Height: 2.5 mm
Package Depth: 7 mm

1. Minimum temperature at 10W, 10oC cooling water, 2 LPM flow rate
2. CTR = (Laser case temperature - mount temperature) / laser waste heat
3. Stability measured at -25oC with a 5W load under 100 mTorr vacuum using
LDT-5980 temperature controller.
4. Weight with XYZ stage
5. Based on calculation of index of refraction in air

ORDERING INFORMATION
LDM-4872
LDM-487212
LDM-487213
LDM-4030
LDM-4031
LDM-4032
LDM-4033
LDM-487201
LDM-487202
LDX-3232
LDT-5545B
LDT-5948
LDT-5980
LDT-53520/2
LDT-53540/2
CC-305S
CC-501HT
CC-596HQCL Mount, Water-Cooled Base
Mid-IR Window
XYZ Stage and Lens
6.5mm diameter, 4.0mm FL Mid-IR Lens, 80% transmission
6.5mm diameter, 4.0mm FL Mid-IR Lens, AR Coating 2-3 m,
95% transmission
6.5mm diameter, 4.0mm FL Mid-IR Lens, AR Coating 3-5 m,
95% transmission
6.5mm diameter, 4.0mm FL Mid-IR Lens, AR Coating 7-14 m,
95% transmission
C-Block (C-Mount) Mounting Block
Alpes Mounting Block
High Compliance Current Source
50W Thermoelectric Temperature Controller
60W Precision Temperature Controller
120W Thermoelectric Temperature Controller
200W Laser Diode Thermoelectric Chiller
375W Laser Diode Thermoelectric Chiller
Current Source/Laser Diode Mount Interconnect Cable
6A TE Interconnect Cable, 15-Pin to 7W2
10A TEC Interconnect Cable, 25 pin d-sub to 7W2

For information callwww.ilxlightwave.com

Optional XYZ stage with multiple
ZnSe lens options

NOTES

In keeping with our commitment to continuing improvement, ILX Lightwave reserves the rightto change specifications without notice or liability for such changes.

P.O. Box 6310, Bozeman, MT 59771 • FAX: 406-586-9405

Active temperature control from-30oC to 30oC
Ports for vacuum evacuation ornitrogen purge

Laser Package
Dimensions

GENERAL

Compatible with the LDX-3232
CW QCL Driver

The LDM-4872 Quantum Cascade Laser Mount providesconvenient mounting for quantum cascade lasers in a vacuum
or nitrogen purged environment. The 4872 is offered withstandard mounting plates for C-Mount (C-Block), Alpes COC,and customer proprietary quantum cascade lasers. A wide
temperature control range is accomplished by an integrated
thermoelectric module and a high performance water-cooled
cold plate which provides for an active control range of -30oC to30oC with heat loads up to 10W.
Fixture design and precision machining result in low,
repeatable thermal resistance between the QCL and LDM-4872
minimizing the temperature difference between the laser andthe fixture.
The LDM-4872 mount is compatible with ILX Lightwave
current sources and temperature controllers through interconnect
cabling for quick setup. Optical table mounting is made possible
through ANSI and metric spaced mounting holes on the baseof the mount.

1-800-459-9459
International Inquiries: 406-556-2481
email: sales@ilxlightwave.com

Rev03.060210

Convenient Mounting for
Quantum Cascade Lasers

LDM4872
Quantum
Cascade Laser
Mount