In response to increasing demand for flat-top narrow bands for laser applications, we are pleased to add to our range of optical filters a new series of 4-cavity Fabry-Perot narrowband filters, ideal for demanding LiDAR, range-finding and free space optical communications applications. The filter coatings are fabricated from hard oxide materials so as to minimise wavelength shift due to temperature and angle of incidence variations, and ensure high durability. Spectral stability remains over a temperature range of -60°C to +80°C.
The range features multi-cavity designs with flat transmission peaks and a steep transition region to deep blocking of greater than OD4 from 1 – 2.5 μm. Narrow bandwidths of 1 nm – 5 nm are available with customer defined centre wavelength values. Custom sizing is also available.
