Holographic Optics
Use our diffractive holographic filters for ASE elimination, laser wavelength locking, and Rayleigh-blocking in THz-Raman.
- Stabilized Wavelength Control Lock your pump/diode laser over a broad temperature range.
- Narrow Bandwidth Maximize the performance of spectroscopy systems with improved ASE and Rayleigh rejection.
- Chirped Pulse Amplification Stretch and recompress high power CPA pulses in an ultra-compact footprint.
Unmatched Diffractive Grating
All Coherent VHG and VBGs are bulk “solid-state” diffractive holographic filters made from a proprietary photosensitive optical glass, which unlike thin films or gels, can deliver ultra-stable, degradation-free performance over an unlimited lifetime. They are ideal for ASE elimination, laser wavelength locking, and Rayleigh-blocking in THz-Raman.
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 PowerLocker® Gratings Increase the spectral brightness of your laser diode and get highly stabilized optical performance over extended temperature ranges. |
Narrow Bandwidth - Get up to 10X reduction in laser bandwidth. |
Compact and Economical - Smaller and less costly than external cavity setups. |
Thermally Stable - Minimize the temperature dependence of your laser wavelength. |
 SureBlock Notch Filters Enable complete material identification by capturing THz-Raman signals that provide structural information in addition to the traditional chemical fingerprint. |
Ultra-Narrow Bandwidth (<10 cm⁻¹) - Acquire ultra low frequency Raman data. |
Exceptional Optical Density with High Transmission - Detect both Stokes and Anti-Stokes Raman signals. |
Wide Selection - Available at all standard Raman wavelengths from 488 to 1064 nm. |
 NoiseBlock Filters Suppress the ASE background emission that commonly occurs in laser diodes. Create a pure, ASE-free, narrow-band laser that is ideal for Raman spectroscopy. |
High (>90 %) Efficiency - Brighter lasers and more intense spectral data. |
High SNR Ratio - Narrow Spectral Profile - HWHM<10 cm⁻¹ for optimum Raman resolution. |
Strong (>70 dB) Blocking - Cleaner spectra with lower background noise. |
 PicoPulse Filters Use these pulse stretcher/compressor filters to get high peak power in femtosecond pulsed laser systems. Delivers a distortion-free round output beam. |
Free Space Operation - Supports larger beams and higher powers than CFBGs.
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Compact Format - Avoids the size and alignment challenges of grating methods.
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Thermally Invariant - Does not drift with any changes in lab temperature.
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Resource List
Featured Success Story
University of Vienna: Shaping and Patterning Electron Beams with Laser Light
Dr. Thomas Juffmann and team developed new imaging techniques in light and electron microscopy using the Coherent Monaco femtosecond laser.
Optical Manufacturing Capabilities
Learn about the vertically integrated capabilities for material growth, fabrication, coating, and assembly, and rigorous QA at Coherent. Discover how these ensure the performance and reliability of our optics and minimize supply chain risks and uncertainties.
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