ULF Raman filters

BragGrate Raman filters from OptiGrate are designed to enable access to Stokes and anti-Stokes Raman bands in the ultralow terahertz frequency range down to 5 cm^-1. According to the company, laser line cleaning and light rejection notch filters are provided, and the filter production line is extended to cover many standard and custom laser wavelengths from 405 nm to 1550 nm.

Optigrate, Oviedo, FL. www.optigrate.com