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Description

High-power Raman lasers are specialized excitation sources designed for Raman spectroscopy, chemical analysis, biomedical sensing, and optical characterization applications requiring stable narrow-linewidth laser illumination. These spectrum-stabilized multimode diode laser systems are available at Raman excitation wavelengths of 532nm, 638nm, 785nm, and 1064nm, enabling flexible optimization across a wide range of organic, inorganic, pharmaceutical, and biological spectroscopy workflows.

The integrated Raman laser modules combine laser drive electronics, thermoelectric cooling (TEC), wavelength stabilization, and safety interlock systems into compact turnkey packages optimized for laboratory instrumentation and OEM spectroscopic integration. With side-mode suppression ratios greater than 40 dB, spectral linewidths around 0.2 nm, and power stability below 3% peak-to-peak over extended operating periods, these lasers are engineered to support high signal-to-noise Raman measurements and long-duration analytical experiments.

Multiple excitation wavelengths are available to accommodate different Raman spectroscopy requirements. The 532nm excitation source is commonly used for inorganic materials and applications requiring strong Raman scattering efficiency, while 638nm excitation provides a balance between Raman signal intensity and fluorescence suppression for biomedical and life-science measurements. The widely used 785nm Raman laser minimizes fluorescence in many organic and chemical samples, making it one of the most popular excitation wavelengths in laboratory Raman spectroscopy. For fluorescence-sensitive materials, pigments, and biological tissues, the 1064nm excitation option further reduces fluorescence background while supporting near-infrared Raman analysis.

The laser subsystems support high-output continuous-wave (CW) operation with output powers exceeding 500 mW for selected wavelengths. Integrated TEC stabilization maintains wavelength consistency independent of case temperature fluctuations, helping preserve Raman spectral accuracy during long acquisitions and variable operating conditions. TTL modulation capability up to 100 kHz enables synchronization with spectroscopy systems, scanning platforms, and automated instrumentation workflows.

Designed for integration with fiber-optic Raman probes, spectrometers, hyperspectral systems, and OEM spectroscopy platforms, these Raman excitation lasers support applications in pharmaceutical analysis, material science, biomedical diagnostics, semiconductor inspection, environmental monitoring, and advanced research instrumentation.

Choosing the Right Raman Excitation Wavelength:

532nm - Inorganic materials, Higher fluorescence
638nm - Biomedical samples, Moderate fluorescence
785nm - Organic chemicals, Slightly weaker Raman signal
1064nm - Highly fluorescent samples, Lower detector sensitivity

High-Power Raman Lasers for Spectroscopy | 532nm, 638nm, 785nm & 1064nm Excitation Sources

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Specifications

Center Wavelength: 0.532 um
Output Power: 100 mW
Dimensions: 110 mm x 89 mm x 53 mm
Weight: 600 g
Noise: <0.5% RMS
Output Fiber: 100 µm @ 0.22 NA
Warm-up: 15 minutes
Temperature: -10 °C to 40 °C
Stability: <3% peak-to-peak in 8 hours
Humidity: 5-95% non-condensing
Laser Life: 10,000 hours
Power Consumption: 3.0 A @ 5 VDC
Power Output (CW): >500 mW
Peak Wavelengths: 785 +/- 0.3 nm
Spectral Line Width: 0.2 nm (typical)
Rise Time: <500 msec
Control: TTL modulation -- 0 to 100 kHz
Connector: SMA 905 or FC
High-power Lasers: 532nm, 638nm, 785nm, 1064nm
Typical Output Power (532 Nm): >100 mW
Typical Output Power (638 Nm): >350 mW
Typical Output Power (785 Nm): >350 mW
Typical Output Power (1064 Nm): Adjustable to >500 mW
Laser Source: Diode

Got questions about specs? Use the inquiry form to ask.

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Features

  • Multiple Raman Excitation Wavelengths
    Available in 532nm, 638nm, 785nm, and 1064nm configurations for optimized Raman spectroscopy performance across different sample types.
  • Spectrum-Stabilized Laser Output
    Integrated wavelength stabilization maintains narrow spectral linewidth and minimizes drift during long-term operation.
  • High Output Power
    Continuous-wave output powers exceed 500 mW for selected models, supporting strong Raman excitation and improved signal collection.
  • Narrow Spectral Linewidth
    Typical spectral linewidth around 0.2 nm supports high spectral resolution Raman measurements.
  • Integrated TEC Cooling
    Thermoelectric cooling helps maintain wavelength stability and consistent optical performance across varying environmental conditions.
  • Low Noise Operation
    Noise levels below 0.5% RMS support high signal-to-noise Raman spectroscopy measurements.
  • Fiber-Coupled Output
    Available with SMA 905 or FC optical connectors for integration with Raman probes, spectrometers, and fiber-optic instrumentation.
  • TTL Modulation Support
    TTL modulation from 0–100 kHz enables synchronization with scanning systems and automated spectroscopy workflows.
  • Turnkey Integrated Design
    Includes integrated laser drivers, TEC electronics, safety interlocks, and control interfaces for laboratory and OEM deployment.

Applications

  • Raman Spectroscopy
    High-stability excitation sources for Raman chemical fingerprint analysis and vibrational spectroscopy.
  • Pharmaceutical Analysis
    Suitable for molecular identification, counterfeit detection, and process analytical technology (PAT).
  • Biomedical Spectroscopy
    638nm and 785nm excitation wavelengths are commonly used in biomedical Raman systems to balance Raman signal intensity and fluorescence suppression.
  • Material Science and Semiconductor Analysis
    Supports Raman characterization of semiconductors, crystalline materials, carbon structures, and nanomaterials.
  • Environmental Monitoring
    Useful for chemical contaminant analysis and field-deployable spectroscopy systems.
  • Fiber-Optic Raman Systems
    Compatible with fiber-coupled Raman probes and miniature spectrometer architectures.
  • Hyperspectral and OEM Integration
    Compact integrated modules support custom spectroscopy platforms and embedded instrumentation systems.

Frequently Asked Questions

What is a Raman laser used for?
A Raman laser provides narrow-linewidth excitation light for Raman spectroscopy systems, enabling molecular identification and chemical characterization through Raman scattering measurements.
Why are different Raman excitation wavelengths used?
Different excitation wavelengths affect Raman signal strength, fluorescence background, penetration depth, and sample compatibility. Shorter wavelengths generally produce stronger Raman signals, while longer wavelengths often reduce fluorescence interference.
What is the advantage of 785nm Raman excitation?
785nm is one of the most widely used Raman excitation wavelengths because it offers a strong balance between Raman scattering efficiency and fluorescence suppression for many organic and chemical samples.
When is 1064nm Raman excitation preferred?
1064nm excitation is commonly used for highly fluorescent samples, biological tissues, pigments, and dark-colored materials where shorter wavelengths may generate excessive fluorescence background.
Why is 532nm excitation used in Raman spectroscopy?
532nm excitation produces strong Raman scattering efficiency and is often preferred for inorganic materials, crystalline samples, and applications where fluorescence is less problematic.
What does spectrum stabilization mean in Raman lasers?
Spectrum stabilization helps maintain a consistent excitation wavelength and narrow spectral linewidth during operation, improving Raman spectral accuracy and repeatability.
What is side-mode suppression ratio (SMSR)?
SMSR measures how effectively unwanted secondary laser modes are suppressed relative to the primary emission mode. Higher SMSR values improve spectral purity and signal quality in Raman spectroscopy.
What optical connectors are supported?
The laser systems support SMA 905 and FC optical connectors for compatibility with Raman probes, optical fibers, and spectroscopy instrumentation.
Are these lasers suitable for OEM spectroscopy systems?
Yes. The compact integrated design, TEC stabilization, TTL modulation, and fiber-coupled architecture make these Raman lasers suitable for OEM spectroscopy integration and custom analytical instruments.
What is Raman scattering?
Raman scattering is an inelastic light-scattering process in which incident photons interact with molecular vibrational modes, producing wavelength shifts characteristic of specific chemical structures and materials.

Got more questions? Use the inquiry form to ask the supplier directly.

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