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All-Inclusive, Pre-Configured Laser Diode Control Electronics & Mounting System:
- Output Current Range 0 to 75 Amps
- TEC Controller, Mount & Cables Included

  • 75 Amp Laser Diode Control System
  • Mounting Module for 75 Amp Laser Diode Controller
  • 75 Amp Laser Diode Control System Features
  • Laser Diode Controller System Turn-Key
  • 75 Amp Laser Diode Controller with TEC Mount

sku / item#: RLS/LDC-700X
ships: Request a Quote for Current Ship Date

Key Features
  • Heat Sink Mounting Plate and Cables Pre-Configured for Your High Power Laser Diode Module
  • All-Inclusive Control System with Laser Diode Driver, TEC Controller, Mount and Cables
  • Models Available for All High Power Laser Diode Package Styles
  • RS232 Interface with LabVIEW Drivers; USB Optional

Price and Delivery Quote

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PRICE $4345.00
  • Output Current Range: 0.00 - 75.00 Amps
  • Compliance Voltage Range: 5.00 Volts
  • Current Noise & Ripple (rms): < 1% of Full Scale Current
  • Current Setpoint Resolution: 18 mA
  • Current Setpoint Accuracy: ± 0.5%
  • Current Stability (4 hours): ≤ 100 ppm
  • Current Limit Setpoint Accuracy: ± 2%
  • Photodiode Current Measurement Accuracy: ± 0.5%
  • Photodiode Current Measurement Range: 0.00 - 700 μA
  • Soft-Start Current Ramp to Setpoint (User Programmable)
  • Soft-Start Current Ramp Factory Default Set to 300 Milliseconds
  • Current Limit Temperature
  • Temperature Limits (Upper and Lower)
  • Open Circuit Detection
  • Short Circuit when Laser Diode Current Turned OFF
  • ESD and Power Surge Clamp
  • Reverse Voltage Transient Clamp
  • Factory Pre-Set Default Upper Temperature Limit: 35°C
  • AC Line Filter
  • Rear Panel Keylock Switch and Safety Interlock
  • TEC Output Power Total: 336 Watts
  • TEC Output Current Range (bipolar): ± 7.00 Amps
  • TEC Output Voltage Range (bipolar) : ± 48.00 Volts
  • Temperature Sensor Inputs: 10 kΩ Thermistor, NTC, PT100, PT1000
  • TEC Control Loop Algorithm: Full P.I.D.
  • P.I.D. Variables: User Adjustable to Optimize Temp. Settling Speed
  • TEC Setpoint Resolution: 0.01°C
  • Temperature Range: -25°C to 150°C
  • Factory Set Default Lower Temperature Limit: 5°C
  • Factory Set Default Upper Temperature Limit: 35°C
  • Cooling Method: TEC-Peltier Coolers, Dual Fans for Waste Heat Removal
  • TEC Ratings (max per TEC element): 6 Amps, 11 Volts
  • Heat Sink Thermal Load Maximum: 105 Watts (@ 30ºC)
  • Fan Rated Input Voltage 24 VDC (supplied by controller)
  • Fan Rated Input Current: 300 mA (supplied by controller)
  • Mounting Plate Material: Anodized Aluminum
  • Mounting Plate Area: 105 mm x 75 mm
  • Mounting Plate Hole Footprint: Customer Specified Package Style
  • Mounting Plate Integrated Thermistor: 10 kΩ
  • Electrical Connector to Controller: DSUB, 15-pin
  • System Includes 1 x 1.5 meter Current Interface Cable (90A rated)
  • System Includes 1 x 1.5 meter TEC Control Interface Cable
  • QCW Pulse Width Rise Time: 25 μs
  • Pulse Time Base Accuracy: ± 1.0%
  • QCW MODE 1: User Adjustable Pulse Width and Repetition Rate using Internal Pulse Generator
  • QCW MODE 2: External Trigger to Internal Pulse Generator: Rising Edge Triggered QCW Pulse with Internally Adjusted Pulse Width
  • MODULATION Input (BNC): Digital (TTL) or Analog
  • MODULATION BNC Input Impedance: 10K ohm
  • ---------------------------------------------------------------------------------------------
  • MODULATION Input Voltage Range: 0 ~ 4 Volts (4V = Max Current)
  • Analog Modulation Bandwidth: 1 Hz – 20 kHz
  • RS232 Standard LabView Drivers Included
  • USB Optional: $145.00 (OPTION SVC-USB)
  • LabView Drivers Included
  • Power Input: Universal 90 ~ 230 VAC, 50/60 Hz
  • System Weight (total): ~ 15 kg
  • Controller Dimensions: 275mm x 200mm x 127mm

Product Overview:

Turn-Key 75 Amp Laser Diode Control Overview

This high power control solution is an all-inclusive system for controlling high power single emitter pump laser diodes. This system includes a precision current source, a full PID temperature controller driving up to 336 Watts to a Peltier device cooler, an actively cooled heat sink, and all required cables.

The current source offers industry leading protection for your laser diode. The heat sink and TEC cooled mounting plate offer a high performance pre-configured mounting solution. The LDC-700X is an affordable, high performance solution for safely powering your laser and running at a stable temperature in laboratory environments. Standard mounting hole footprint patterns are available for many different module types. Refer to the specification table for common package type configurations. Or send us the data sheet for your laser and we will customize the mounting hole pattern on request.

Laser Diode Protection Features

These units offer the highest level laser diode protection available to ensure that your device under test is protected at all times. Soft-start current, current and temperature limits, and a fast shut-down sequence keep your device protected at all times. Additionally, transient filters and AC line filters protect the laser against brown-out or black-out power conditions. The precision TEC controller offers a full P.I.D. control loop for fast and efficient thermal stabilization.

A back-panel safety interlock connector ensures that the laser diode current is not switched on until the user has determined it is safe to do so.

Temperature Controller Features:

The 336 Watt temperature controller operates with a full PID loop control and provides millidegree temperature stability, to quickly stabilize high heat loads to the temperature set-point and reduce the risk of damage to your laser.

User adjustable upper and lower temperature limits can be programmed to protect the laser diode and the Peltier device. Additionally, TEC output current limits are user-configured to protect the Peltier device from over-drive damage.

Flexible Modulation, Internal Function Generator & QCW Pulse Modes:

In addition to CW (continuous wave) mode of operation, the 700X system includes flexible modulation capabilities and a slow pulse (QCW) mode. The rear panel of the controller has a BNC input for an analog or TTL digital modulation input with a 10K input impedance. The controller has an internal function generator which can be used to set the modulation signal or the quasi-CW pulses with a time base accuracy of 1.0%. In QCW mode, the user can also set the 20μs to CW pulses from a remote TTL signal source.

Front Panel and Remote User Interface:

Controller setup is fast and intuitive via the front panel LCD display and alphanumeric interface, with a simple to use menu structure and key pad.

These systems come with standard an RS-232 interface. The included LabView driver GUI makes set-up and control of the system fast and simple. The controller can be ordered with a USB interface; contact us for more information.

OsTech Laser Diode Controllers:
OsTech, based in Berlin Germany, has been developing and manufacturing high stability electronic control products for laser diodes since 1998. They specialize in affordable controllers for both low and high power devices. In addition to laboratory benchtop units, they offer multiple OEM models of their products for industrial applications.

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