Volume Holographic Bragg Grating Filters
Stabilize and narrow your laser spectrum with VHG or VBG ultra-narrowband filters for diode pumping, spectroscopy, and high-precision instrument applications.
- 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.
Need guidance on picking the right product? We can help.
 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.
|
Compact Format - Avoids the size and alignment challenges of grating methods.
|
Thermally Invariant - Does not drift with any changes in lab temperature.
|
Resource List
Ready to
Get Started?
By providing your information and clicking ‘Subscribe’, you opt-in to receiving periodic email marketing communications from Coherent Corp. and understand that your personal data will be processed in accordance with our Privacy Policy and that our Terms apply. You may opt-out of marketing emails sent by us at any time by clicking the unsubscribe link in any marketing email you receive.