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685nm Laser Diode, 45mW Narrow Linewidth Wavelock™ Turn-Key Module
- <50MHz Linewidth
- Collimated Free-Space Output
- Fiber-Coupled Output Available

  • Lambda Wavelock Wavelength Stabilized Laser Diode Raman
  • Lambda Wavelock Laser Diode Wavelength Stability
  • Lambda Wavelock Wavelength Stabilized Laser Diode GUI Software
  • Lambda Wavelock Wavelength Stabilized Laser Diode Power Supply Options
  • 685nm-45mw-laser-diode-infographic
  • Lambda Wavelock Wavelength Stabilized Laser Diode Spectroscopy Accessories

sku / item#: DLA490360 / 685NM-LASER-MODULE
ships: Request a Quote for Current Ship Date

Key Features
  • User Adjustable Output Power up to 45 mW
  • Long Coherence Length > 2.0 meters
  • Ultra-High Wavelength Stability: < 0.015 nm
  • Optimized for Raman Spectroscopy Applications
  • Laser Controller Unit and Power Supply Included; USB Interface with Control GUI / Software Included
  • Offered by RGB Photonics, a Laser Lab Source Marketplace Seller
  • Sold & Supported in North America by: LaserDiodeSource.com, part of the
    Laser Lab Source Marketplace Group

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PRICE $7599.00
Key Specifications
  • User Adjustable Output Power Range: 0 – 45 mW
  • Wavelength: 685 nm ±1 nm
  • Power Stability: <1% (10 hours)
  • Linewidth: < 50 MHz / 0.1 pm
  • Coherence Length: > 2.0 m
  • Beam Diameter (mm): 1.1 × 2.2 to 1.2 × 2.8
  • Beam Divergence: < 1.2 mrad
  • Beam Alignment: < 5 mrad und < 0.1 mm (compared to base mount)
  • Beam Mode: TEM00
  • Polarization: Linear > 100:1 (typ)
  • Pointing stability: < 5 µrad/K
  • Temperature Control Accuracy: < 10 mK
  • Warm-Up Time: 5 seconds
  • Modulation: Analog & Digital External Modulation DC to 1.5 MHz
  • Modulation Input: 0 – 5 V
  • Drive Mode: Active Current Control (ACC)
  • Power: 12 – 36 VDC, up to 2 A
  • Operating temperature 0 °C to 45 °C (non-condensing)
  • CDRH Classification: 3b
  • Digital Interface: USB (RS-232 Optional)
  • Laser Head Dimensions (mm): 63.5 × 31.0 × 32.5
  • Weight: 94 g
  • Refer to Datasheet for Power Source Dimensions and Weight
  • Laser Output Power Set-Point (User Adjustable)
  • Laser Temperature Set-Point (User Adjustable)
  • External Modulation

Product Overview:

685nm, 45mW, Wavelock™ Laser Diode Module Overview

The WAVELOCK™ series laser diode modules are stabilized using a VHG, volume holographic grating. The WAVELOCK™ VHG provides exceptional wavelength stability and a narrowed spectral bandwidth for the most demanding Raman spectroscopy and analytical instrumentation applications. The volume holographic grating functions as an external cavity that locks the laser diode’s wavelength and provides a narrow emission output.

The PowerController low noise current source has been optimized to provide the highest levels of power stability.

Optimized for Laser Output Stability

    • WAVELOCK™ VHG stabilized laser diode source offers industry leading wavelength and power stability
    • Optimized for Raman Spectroscopy applications
    • Integrated precision temperature stabilization & low noise current source help provide exceptional optical stability
    • Wavelength stability < 0.015nm
    • Power stability < 1%
    • High power and long coherence length

Versatile Power Supply Options

The Lambda Beam WAVELOCK™ VHG laser head requires a laser controller to provide power and control all operating parameters; this model includes the PowerController module. (For scientific applications and prototyping we recommend using our PowerController. For industrial integration we also offer the highly compact PowerBox to be directly attached to the laser head or connected via a customized cable.)

Optional Accessories Available to Suit Your Application

    • Beam diameter correction
    • Polarization > 10 000 : 1
    • Opto-mechanical shutter
    • Diode wavelength selection
    • Water cooling base plate
    • Remote control RC-1 for Power Controller
    • RS-232 interface
    • Fiber coupler

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