Successful Test of Novel Porous Silicon Long Wave Pass Filter

A long wave pass filter with a 30 µm cut-on has been successfully tested at the Institut National d'Optique (INO), Canada's world-class center of expertise for research in optics and photonics. The filter, supplied by Lake Shore Cryotronics of Westerville, OH, is based on a novel porous silicon technology. This all-silicon design provides excellent thermal and mechanical properties -- even at cryogenic and elevated temperatures.

INO research scientist, M.S. Georges Baldenberger, mentioned, "We specified Lake Shore's filter because of its promising spectral performance and off-the-shelf availability. Throughout our testing, Lake Shore has provided excellent quality of service in support of our research efforts."

M.S. Baldenberger further commented, "The filter performed very well and enabled us to achieve the experimental results we needed. It had very good behavior in the mid-IR wavelength range, which had to be absolutely rejected." As a result of this successful test, INO has placed a follow-up filter order.