To obtain the clearest and deepest spectral-domain optical coherence tomography (SD-OCT) images, some very specific considerations in optical design are required. Due to the interferometric nature of OCT, such an optical design must cover a wide bandwidth with the highest signal to noise at all operating wavelengths or risk degradation of of the resulting image.
That is why Wasatch Photonics has designed its volume phase holographic (VPH) transmission gratings to have high efficiency for all operating wavelengths, independent of polarization - even at the extremes of an operating wavelength range of 100 to 200 nm.
Users can select from Wasatch Photonics’ series of stock gratings or draw on the company’s know-how in OCT to design their perfect grating for OCT at wavelengths spanning 400 - 1700 nm. OEMs trust Wasatch Photonics to work closely with them, right from preliminary concept to product launch, supporting tens to thousands of volumes.
Features and Benefits
- Exceptional 1st order diffraction efficiency for faster scan rates and greater sensitivity
- Patented broadband with high dispersion designs
- Minimal polarization dependence
- Excellent uniformity across the full spectral band
- Allows compact, transmissive optical designs
- Strong and durable design for simple cleaning
- Stray light is reduced by low scatter and AR coating
Transmissive VPH gratings enable more compact optical designs with less stray light and higher efficiency. Users can place Wasatch Photonics’ VPH gratings at the center of their system and get clearer images more quickly.
Wasatch Photonics is a premier supplier of OCT gratings and provides more design technologies to customize the VPH transmission gratings to suit the requirements of users’ particular application and optical design.
The industry-leading Cobra OCT spectrometers from Wasatch Photonics utilize these gratings and can be supplied as custom or turnkey solutions to speed up users’ system design and time to market.
Right from prototyping through to volume production, Wasatch Photonics can offer solutions that are optimized for customers’ exact OCT imaging requirements.