Volume Holographic Grating Filters (VHG)

All Coherent Volume Holographic Grating Filters (VHGs) 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. Capable of very tight wavelength, efficiency, bandwidth, and diffraction angle control, Coherent VHGs can be precisely and reproducibly engineered to meet even the most demanding spectral and temporal specifications.

Proprietary materials, manufacturing and test processes ensure consistent, repeatable performance from every single filter, every time.

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Risk factors: Except for the historical information contained here, many of the matters discussed in this Web site are forward-looking statements, based on expectations at the time they were made, that involve risks and uncertainties that could cause our results to differ materially from those expressed or implied by such statements. These risks are detailed in the “Factors That May Affect Future Results” section of our latest 10-K or 10-Q filing. Coherent assumes no obligation to update these forward-looking statements.


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