Home  >  Laser Diode Heat Sinks & Mounts  >  OsTech   >  LDM-50W


50 Watt Laser Diode Mount & Heat Sink with Integrated Peltier Cooler for Pump Lasers

  • 50 Watt Laser Diode Heat Sink Features
  • Laser Diode Heat Sink Top View
  • Laser Diode Heat Sink Connectors
  • Laser Diode Heat Sink Dimensions

$575.00   ships: 5 to 7 days | item#: LDM-50W

Key Features
  • Mounting Plate Footprint and Anode/Cathode Leads Pre-Configured for your Laser Diode Package
  • Standard Mounting Plates for Fiber Coupled Modules from Lumentum, IPG, Lumics, Eagleyard, II-VI
  • Integrated Peltier Cooler and 10 kOhm Thermistor
  • Thermal Resistance R (th): < 0.06 K/W
  • Offered by OsTech, a Laser Lab Source Marketplace Seller
  • Sold & Supported in North America by: LaserDiodeControl.com, part of the
    Laser Lab Source Marketplace Group

Price and Delivery Quote

You will receive factory-direct price with no mark-ups

Technical Questions for this Product


Questions route directly to the correct Product Engineer

Add to Cart or Buy Now

Customers Also Considered:

Why do Scientists & Engineers Choose Laser Lab Source?

PRICE $575.00
general Specifications
  • Maximum Heat Load (@ 25ºC room temp.): 52 Watts
  • Laser Diode Mounting Plate Area: 58 mm x 52 mm
  • Laser Diode Mounting Plate Material: Anodized Aluminum
  • Laser Diode Mounting Plate Surface Flatness: < 10 µm
  • Laser Diode Package Footprint (pre-drilled holes): Customer Specified
  • Graphite Thermal Pad (included): Pre-Cut to Match Laser Diode Package Footprint
  • Temperature Uniformity (typical): < 0.5 ºC Across Mounting Plate
  • Temperature Control Range (typical): 10 ºC ~ 45 ºC
  • Thermal Resistance R (th): < 0.06 K/W
INTEGRATED PELTIER COOLER and thermistor specifications
  • Peltier / TEC Current (max): 6 Amps
  • Peltier / TEC Voltage (max): 11 Volts
  • Integrated Temperature Sensor: 10 kOhm NTC
Cooling Capacity @ 25°C Ambient (room) Temperature
  • Laser Diode Set Point @ 15°C ... Waste Heat Removal 38 Watts
  • Laser Diode Set Point @ 20°C ... Waste Heat Removal 45 Watts
  • Laser Diode Set Point @ 25°C ... Waste Heat Removal 52 Watts
  • Laser Diode Set Point @ 30°C ... Waste Heat Removal 55 Watts
  • D-sub 15-pin
Fan for Waste Heat Removal (in heat sink base)
  • Fan Power Input (max): 12 VDC
  • Total Power Consumption: 0.9 Watts

Product Overview:

50 Watt Laser Diode Mount & Heat Sink Overview

The LDM-50W is an actively cooled heat sink which utilizes a Peltier TEC element embedded beneath the laser mounting plate as well as a fan in the base of the cooling block. The heat from the laser diode is pumped through the TEC to the heatsink at the base of the cooling block. The fan located in the base dissipates the heat from the base of the cooling block.

These Peltier / TEC-cooled mounts provide high performance heat removal and temperature stabilization for the pump laser diode. Standard mounting plates are available for most fiber coupled package styles, and custom plates are available.

Mount & Heatsink Features

The heat sink and mounting modules offer a temperature control range of +10 °C to 45 °C and can dissipate up to 52 watts of waste heat at a lab temperature of 25 °C.

The mount includes a 15-pin D-Sub connector, wired for the built-in TEC, temperature sensor, and the fan in the base. The connector also includes pre-wired Anode and Cathode leads for the laser package.

Mount & Heatsink Thermal Conductivity

The LDM-50W offers a low thermal impedance of < 0.06 K/W.

The surface of the mounting plate is machined with micron level surface flatness and finish tolerances. These units ship with a graphite thermal mounting pad which can be placed under the laser to increase thermal conductivity to the mounting plate. The graphite pad is slightly flexible so that small particulates or dust don't inhibit the thermal conductivity path. These features combine to provide a very low thermal resistance between the laser and the TEC controlled mounting plate.

Why do Scientists & Engineers Choose Laser Lab Source?

  • Get DIRECT, Fast Tech-Support from the Product Engineer, No Sales Person in the Middle

  • Get the Lowest Price, Factory Direct, No Mark-Up's, Suppliers Post their Own Price

  • Get a 30 Day Evaluation Period with No Risk Return on Most Products, Check Availability