New Infrared Long-Pass Filters with Cut-on Wavelengths from 4 µm to 150 µm

Lake Shore Cryotronincs' new line of mid- and far-infrared long-pass filters is based on porous silicon technology. The unique patent pending design has excellent thermal and mechanical properties -- even at cryogenic and elevated temperatures, they will not de-laminate under harsh conditions, and they have a wide and flat spectral response to 150 µm and above.

Westerville, OH (PRWEB) March 10, 2006 -- Lake Shore Cryotronics' new line of mid- and far-infrared long-pass filters is based on porous silicon technology. The unique patent pending all-silicon design has excellent thermal and mechanical properties -- even at cryogenic or elevated temperatures, and will not de-laminate under harsh conditions. Lake Shore infrared filters have a wide and flat spectral response to 150 µm and above with cut-on wavelengths from 4 µm to 100 µm. Diameters from 0.5 to 4 inches are available. Long-pass IR filters block short wavelength radiation to improve signal-to-noise in mid- and far-IR applications, including FTIR spectroscopy, astronomy, and IR detector research.

Lake Shore infrared filters are scattering-type filters based on novel electrochemical etching of silicon. The random macroporous silicon scatters the short waves within the blocking range of the filter. Unique design and fabrication processes control the filter rejection edge from mid- to far-IR (100 µm and above). Rejection band blocking extends to 100 nm with optical densities of less than 3. Standard and custom designs are available. Additional services include spectral measurements at 4 K and 77 K.

For more information on the new Lake Shore IR long-pass filters, contact:
Lake Shore Cryotronics, Inc., 575 McCorkle Boulevard, Westerville, OH 43082; Tel: (614) 891-2244; Fax: (614) 818-1600; Or, visit us online at www.siliconfilters.com.

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