High Power
Fiber Coupled
Laser Diode
Mount

Specifications
Laser Packages:

49840 Laser Dimensions:
6-pin:
8-pin:
14-pin:49840 Maximum Pin Width:
49860 2-pin Module Compatibility:
Maximum Laser Current:
49840:
49860:
Maximum Thermal Load:
49840:
49860:
Laser Clamping:
Laser to Hotplate
Contact Thermal Resistance1:
Repeatability1:

2-pin modules and 6-pin,
8-pin, 14-pin fiber coupledbutterfly packages
19mm x 15mm
12.7mm x 21.84mm
12.7mm x 30mm
1.25mmJDS Uniphase, Lumics,
Bookham, EM40.24

150.23100.2250.21060W40W#6-32 UNC,
slotted thumbscrew

Product Features
Accommodates 2-pin, 6-pin, 8-pin
and 14-pin packages

0.20

0.50

0.75

1.00

1.25

1.50

1.75

2.00

Temperature control range from15oC to 85oC

Flow rate (GPM)

Pressure Drop and Thermal
Resistance vs. Flow Rate in theLDM-49800 Series

Up to 60W total heat dissipation
Configurable for any butterfly
module pin-out

12A20ANOTESo1. Clamp screws tightened to 2 in*lbs torque. To find thermal resistance in C/W, multiply bysurface area of laser diode package base.

Compatible with ILX current
sources and temperaturecontrollers

2. LDM-49860 only, defined as (hotplate temperature - inlet water temperature)/thermal load.

<0.10oCin2*W-1+0.01oCin2*W-1Connectors
Laser Diode Current:
Hybrid D-sub, male, 7W2Internal TEC:
9-pin, D-sub, female(49840/49840T only)
Case Temperature Control:
Hybrid D-sub, female, 7W2Internal Thermistor:
15-pin D-sub, female(w/o case temperature control)
Ground:Female banana jack
Water Connectors:
1/8” NPT to 1/4” nipple,
barbed for 1/4” tubingWater Pressure Drop:
5 psi at 1.0 GPM
Temperature Sensor:
10k NTC thermistor
Cold Plate Thermal Resistance2:

0.25oC/W @ 1.0 GPM

49840T Case Control:
Thermal Load:
Temperature Control Range3:
TE Module4:
Imax:
Vmax:

Solid State, Thermoelectric
60W
15oC to 85oC

49860T Case Control:
Thermal Load:
Temperature Control Range3:
TE Module4:
Imax:
Vmax:

0.25

Pressure drop
Thermal resistance

Thermal resistance (°C/W)

20

Pressure drop (psi)

LDM
49800
Series

14.6A
15.4V
Solid State, Thermoelectric
40W
15oC to 85oC

3. Control range at maximum thermal load. Mount can control down to 0oC at lower heat loads.
See tech note “LDM-49800T Temperature Control”. Assumes 20oC water temperature and 1.0 pgm(3.79 liter/min). Lower control temperatures can be achieved with lower water temperatures for any
given heat load.
4. Module ratings based on a single TE module at 25oC operating temperature. For optimizing
TEC current limits on a temperature controller, see application note #14: “Optimizing TEC DriveCurrent”.

Case temperature control models
Optical table mountingThe LDM-49800 Series Laser Diode Mounts provide acompact, easy-to-use solution for testing high power fiber coupledpackaged laser diodes. The series provides convenient mountingfor 2-pin modules and 6-pin, 8-pin, and 14-pin butterfly devices
with or without an internal TE module. A case temperature
control model is available for temperature controlling uncooled
lasers over a temperature range of 15oC to 85oC. A water cooledheat sink allows the 49800 series to dissipate up to 60W.
Fixture design and precision machining result in low,
repeatable thermal resistance between the fiber-coupled moduleand 49800 minimizing the temperature difference between thelaser and the fixture.
The LDM-49800 mounts are compatible with ILX Lightwave
current sources and temperature controllers through interconnect
cabling for quick setup in R&D or manufacturing environments.
Optical table positional mounting is made possible through ANSI
and metric spaced mounting holes on the base of the mount.

ORDERING INFORMATION
LDM-49840
LDM-49840T
LDM-49806*
LDM-49808*
LDM-49814*
LDM-49860
LDM-49860T
LDM-4986001
LDM-4986002
LDM-4986003
CC-305H
CC-308H
CC-306HT
CC-501HT
CC-505S

High Power Butterfly Mount
High Power Butterfly Mount with Case Control
49840 6-Pin Clamp
49840 8-Pin Clamp
49840 14-Pin Clamp
High Power 2-Pin Module Mount
High Power 2-Pin Module Mount with Case Control
49860 Terminal Block for JDS Uniphase Devices
49860 Terminal Block for Bookham and EM4 Devices
49860 Terminal Block for Lumics Devices
6A CS Interconnect Cable, 9-pin to 7W2
20A CS Interconnect Cable, 13W3 to 7W2
6A CS Interconnect Cable, 13W3 to 7W2
6A TE Interconnect Cable, 15-pin D-sub to 7W2
6A TE Interconnect Cable, shielded* one clamp kit is shipped with the LDM-49840 at no charge
In keeping with our commitment to continuing improvement, ILX Lightwave reserves the rightto change specifications without notice or liability for such changes.

8.5A
15.4V

GENERAL
Size (H x W x D):
Weight:LDM-49840:
LDM-49840T:
LDM-49860:
LDM-49860T:

31.8mm x 102mm x 140mm
2.05 lbs (0.93 kg)
2.05 lbs (0.93 kg)
2.12 lbs (0.96 kg)
2.12 lbs (0.96 kg)

Regulatory Compliance:

RoHS

Versatile High Power Laser Diode
Mounting Fixture for Fiber Coupled Modules
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

Rev04.021109

LDM
49800
SeriesHigh Power
Fiber Coupled
Laser DiodeMount

LDM
49800
SeriesLDM-49840 HIGH POWER BUTTERFLYLASER DIODE MOUNTThe LDM-49840 is designed to accommodate
various 6-pin, 8-pin, and 14-pin packages. The
unique clamping and spring-loaded circuit board
arrangement accommodate butterfly modules withdifferent pin heights thus preventing pin damage dueto overbending. Terminal blocks accessible from thebottom side allow configuration of the 49840 for any
butterfly module pin-out.

LDM-49840
LDM-49840T
LDM-49806
LDM-49808
LDM-49814
LFS-498

Minimum Temperature (°C)

REPEATABLE, LOW THERMALRESISTANCE
Careful attention to the LDM-49800 mechanical design
results in a low thermal resistance between the laser
module and the mounting block. Torquing the device
to the recommended value provides constant andrepeatable clamping pressure on the laser optimizing
the thermal resistance between the laser module andthe mounting plate.

The LDM-49800 is compatible with most ILX current
sources including the LDX-36000 series high power
laser diode drivers and the new LDX-32420 20A laser
diode driver. Additionally the mounts are compatible
with ILX temperature controllers. Standard interconnect
cables interface with connectors for laser current,internal TE and case control on the mount.

CASE TEMPERATURE CONTROLThe LDM-49800 series case temperature control option
is available on all LDM-49800 laser diode mounts. Thecase temperature control has an integrated high powerTEC module to provide control of uncooled laser diodemodules with a wide temperature control range of 15oC
to 85oC. The high power TEC removes up to 60W ofwaste heat.

High Power Butterfly Mount
High Power Butterfly Mount withCase Control
49840 6-Pin Clamp
49840 8-Pin Clamp
49840 14-Pin Clamp
Laser Fiber Spool

6-pin, 8-pin, 14-pin Butterfly

20

LDM-49860 HIGH POWER 2-PIN
MODULE MOUNT

15105040

EASY CONNECTIONS FOR QUICKSET-UPHigh Power
Fiber CoupledLaser DiodeMount

ORDERING INFORMATIONThe LDM-49800 Series is compatible with ILX Lightwave laser diode drivers,temperature controllers, thermoelectric chillers, and laser diode controllers
through the use of standard interconnect cables.

45505560Heat Load (W)Case temperature control rangeof the LDM-49840T

The LDM-49860 is designed to support various
manufacturers’ high power 2-pin modules. The laser
clamp provides alignment and excellent clamping
pressure even when the 2-pin module does notinclude mounting flanges. The LDM-49860 isdesigned to fit 2-pin lasers from JDS Uniphase,
Bookham, Lumics, and EM4. Please contact an ILXLightwave sales engineer if you have any questions
concerning fixturing your 2-pin laser diode package tothe 49860.

20Minimum Temperature (°C)

High Power
Fiber Coupled
Laser DiodeMount

LDM49800
SeriesORDERING INFORMATION

15

LDM-49860
LDM-49860T

105

LDM-4986001

0
20

2530

35

40Heat Load (W)Case temperature control rangeof the LDM-49860T

LDM-4986002
LDM-4986003
LFS-498

High Power 2-Pin Module Mount
High Power 2-Pin Module Mountwith Case Control
49860 Terminal Block for JDS
Uniphase Devices
49860 Terminal Block for Bookham
and EM4 Devices49860 Terminal Block for Lumics
Devices
Laser Fiber Spool

2-pin ModuleLDM49800
SeriesLDM-49840 HIGH POWER BUTTERFLYLASER DIODE MOUNTThe LDM-49840 is designed to accommodate
various 6-pin, 8-pin, and 14-pin packages. The
unique clamping and spring-loaded circuit board
arrangement accommodate butterfly modules withdifferent pin heights thus preventing pin damage due
to overbending. Terminal blocks accessible from thebottom side allow configuration of the 49840 for any
butterfly module pin-out.

LDM-49840
LDM-49840T
LDM-49806
LDM-49808LDM-49814
LFS-498

Minimum Temperature (°C)

REPEATABLE, LOW THERMALRESISTANCE
Careful attention to the LDM-49800 mechanical design
results in a low thermal resistance between the laser
module and the mounting block. Torquing the device
to the recommended value provides constant andrepeatable clamping pressure on the laser optimizing
the thermal resistance between the laser module andthe mounting plate.

The LDM-49800 is compatible with most ILX current
sources including the LDX-36000 series high power
laser diode drivers and the new LDX-32420 20A laserdiode driver. Additionally the mounts are compatible
with ILX temperature controllers. Standard interconnect
cables interface with connectors for laser current,internal TE and case control on the mount.

CASE TEMPERATURE CONTROLThe LDM-49800 series case temperature control option
is available on all LDM-49800 laser diode mounts. The
case temperature control has an integrated high power
TEC module to provide control of uncooled laser diodemodules with a wide temperature control range of 15oC
to 85oC. The high power TEC removes up to 60W ofwaste heat.

High Power Butterfly Mount
High Power Butterfly Mount withCase Control
49840 6-Pin Clamp
49840 8-Pin Clamp
49840 14-Pin Clamp
Laser Fiber Spool

6-pin, 8-pin, 14-pin Butterfly

20LDM-49860 HIGH POWER 2-PIN
MODULE MOUNT

15105040

EASY CONNECTIONS FOR QUICKSET-UPHigh Power
Fiber Coupled
Laser DiodeMount

ORDERING INFORMATIONThe LDM-49800 Series is compatible with ILX Lightwave laser diode drivers,
temperature controllers, and laser diode controllers through the useof standard interconnect cables.

45505560Heat Load (W)Case temperature control rangeof the LDM-49840T

The LDM-49860 is designed to support various
manufacturers’ high power 2-pin modules. The laser
clamp provides alignment and excellent clamping
pressure even when the 2-pin module does notinclude mounting flanges. The LDM-49860 isdesigned to fit 2-pin lasers from JDS Uniphase,
Bookham, Lumics, and EM4. Please contact an ILX
Lightwave sales engineer if you have any questions
concerning fixturing your 2-pin laser diode package tothe 49860.

20
Minimum Temperature (°C)

High Power
Fiber CoupledLaser DiodeMountLDM49800
SeriesORDERING INFORMATION15LDM-49860
LDM-49860T

105

LDM-4986001

0202530

3540

Heat Load (W)Case temperature control rangeof the LDM-49860T

LDM-4986002
LDM-4986003
LFS-498

High Power 2-Pin Module Mount
High Power 2-Pin Module Mountwith Case Control
49860 Terminal Block for JDS
Uniphase Devices
49860 Terminal Block for Bookham
and EM4 Devices
49860 Terminal Block for Lumics
Devices
Laser Fiber Spool

2-pin Module

High Power
Fiber Coupled
Laser DiodeMount

Specifications
Laser Packages:

49840 Laser Dimensions:
6-pin:
8-pin:
14-pin:49840 Maximum Pin Width:
49860 2-pin Module Compatibility:
Maximum Laser Current:
49840:
49860:
Maximum Thermal Load:
49840:
49860:
Laser Clamping:
Laser to Hotplate
Contact Thermal Resistance1:
Repeatability1:

2-pin modules and 6-pin,
8-pin, 14-pin fiber coupledbutterfly packages
19mm x 15mm
12.7mm x 21.84mm
12.7mm x 30mm
1.25mm0.24

150.23100.22
50.21

00.75

1.00

1.25

1.50

1.75

2.00

Accommodates 2-pin, 6-pin, 8-pin
and 14-pin packages
Temperature control range from
15oC to 85oC

Flow rate (GPM)

Pressure Drop and ThermalResistance vs. Flow Rate in theLDM-49800 Series

Up to 60W total heat dissipation
Configurable for any butterfly
module pin-out

12A20A60W40W#6-32 UNC,
slotted thumbscrew

Product Features

0.20

0.50

JDS Uniphase, Lumics,
Bookham, EM4NOTESo

1. Clamp screws tightened to 2 in*lbs torque. To find thermal resistance in C/W, multiply by
surface area of laser diode package base.

Compatible with ILX current
sources and temperature
controllers

2. LDM-49860 only, defined as (hotplate temperature - inlet water temperature)/thermal load.

<0.10oCin2*W-1+0.01oCin2*W-1Connectors
Laser Diode Current:
Hybrid D-sub, female, 7W2Internal TEC:
9-pin, D-sub, male(49840/49840T only)
Case Temperature Control:
Hybrid D-sub, male, 7W2Internal Thermistor:
15-pin D-sub, male
(w/o case temperature control)
Ground:Female banana jack
Water Connectors:
1/8” NPT to 1/4” nipple,barbed for 1/4” tubing
Water Pressure Drop:
5 psi at 1.0 GPM
Temperature Sensor:
10k NTC thermistor
Cold Plate Thermal Resistance2:

0.25oC/W @ 1.0 GPM

49840T Case Control:
Thermal Load:
Temperature Control Range3:
TE Module4:
Imax:
Vmax:

Solid State, Thermoelectric
60W
15oC to 85oC

49860T Case Control:
Thermal Load:
Temperature Control Range3:
TE Module4:
Imax:
Vmax:

0.25

Pressure drop
Thermal resistance

Thermal resistance (°C/W)

20

Pressure drop (psi)

LDM
49800
Series

14.6A
15.4V
Solid State, Thermoelectric
40W
15oC to 85oC
8.5A
15.4V

GENERAL

3. Control range at maximum thermal load. Mount can control down to 0oC at lower heat loads.
See tech note “LDM-49800T Temperature Control”. Assumes 20oC water temperature and 1.0 pgm(3.79 liter/min). Lower control temperatures can be achieved with lower water temperatures for anygiven heat load.
4. Module ratings based on a single TE module at 25oC operating temperature. For optimizing
TEC current limits on a temperature controller, see application note #14: “Optimizing TEC DriveCurrent”.

Case temperature control models
Optical table mounting

The LDM-49800 Series Laser Diode Mounts provide acompact, easy-to-use solution for testing high power fiber coupledpackaged laser diodes. The series provides convenient mountingfor 2-pin modules and 6-pin, 8-pin, and 14-pin butterfly devices
with or without an internal TE module. A case temperature
control model is available for temperature controlling uncooled
lasers over a temperature range of 15oC to 85oC. A water cooledheat sink allows the 49800 series to dissipate up to 60W.
Fixture design and precision machining result in low,
repeatable thermal resistance between the fiber-coupled moduleand 49800 minimizing the temperature difference between thelaser and the fixture.
The LDM-49800 mounts are compatible with ILX Lightwave
current sources and temperature controllers through interconnect
cabling for quick setup in R&D or manufacturing environments.
Optical table positional mounting is made possible through ANSI
and metric spaced mounting holes on the base of the mount.

ORDERING INFORMATION
LDM-49840
LDM-49840T
LDM-49806*
LDM-49808*
LDM-49814*
LDM-49860
LDM-49860T
LDM-4986001
LDM-4986002
LDM-4986003

High Power Butterfly Mount
High Power Butterfly Mount with Case Control
49840 6-Pin Clamp
49840 8-Pin Clamp
49840 14-Pin Clamp
High Power 2-Pin Module Mount
High Power 2-Pin Module Mount with Case Control
49860 Terminal Block for JDS Uniphase Devices
49860 Terminal Block for Bookham and EM4 Devices
49860 Terminal Block for Lumics Devices

CC-305H
CC-308H
CC-306HT
CC-320CC-501HT
CC-505S
CC-596H

6A CS Interconnect Cable, 9-pin to 7W2
20A CS Interconnect Cable, 13W3 to 7W2
6A CS Interconnect Cable, 13W3 to 7W2
20A Interconnect Cable, 9W4 to 7W2
6A TE Interconnect Cable, 15-pin D-sub to 7W2
6A TE Interconnect Cable, shielded
10A TE Interconnect Cable, 25-pin D-sub to 7W2LDX-32420
LDX-36000 Series

10/20A Precision High Power Laser Diode DriverHigh Power Laser Diode Drivers

LDT-53520
LDT-53540

250W Laser Diode Thermoelectric Chiller
400W Laser Diode Thermoelectric Chiller* one clamp kit is shipped with the LDM-49840 at no charge

Size (H x W x D):
Weight:LDM-49840:
LDM-49840T:
LDM-49860:
LDM-49860T:

31.8mm x 102mm x 140mm
2.05 lbs (0.93 kg)
2.05 lbs (0.93 kg)
2.12 lbs (0.96 kg)
2.12 lbs (0.96 kg)

Regulatory Compliance:

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

Versatile High Power Laser Diode
Mounting Fixture for Fiber Coupled Modules
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

Rev07.071509

LDM49800
SeriesHigh Power
Fiber Coupled
Laser DiodeMount