1064 nm Raman filters from Iridian reduce fluorescence interference

An updated version of the company's 1064 nm Raman filters are available for use with 1064 nm sources, as they reduce fluorescence interference observed with shorter excitation wavelengths. With an extended operating range to 4000 cm^-1 (1850 nm), identification and analysis using features at Raman shifts beyond the fingerprint region are possible in non-contact identification of explosives and hazardous materials.
Iridian Spectral Technologies
Ottawa, ON, Canada
www.iridian.ca

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PRESS RELEASE

Iridian Offers Extended 1064 nm Raman Filters

Ottawa, Canada - Iridian Spectral Technologies Ltd. (Iridian), a leading global supplier of optical filter solutions, has added improved 1064 nm filters to its Raman filter offerings.

Non-contact identification of explosives and hazardous materials is an important application of portable and handheld Raman spectrometers. Excitation using 1064 nm sources has become increasingly popular due to the reduction of fluorescence interference that is observed with shorter excitation wavelengths. Iridian has improved its 1064 nm laser line and long pass filters by extending the operating range to 4000 cm^-1 (1850 nm). This makes identification and analysis possible using features at Raman shifts beyond the fingerprint region.

While observing spectra without fluorescence is advantageous, the trade-off is a weaker Raman signal intensity. This strengthens the need of high signal-to-noise optical filtering, which Iridian addresses by offering high transmittance and deep blocking filters. Iridian’s improved 1064 nm Raman filters extend the wavelength range of industry-leading performance to provide more signal with less background.

Iridian Spectral Technologies Ltd (Iridian) – Ottawa, ON, Canada – www.iridian.ca – Iridian is a diversified optical filter manufacturer that is an international leader in filter design and manufacture especially for application in the fields of fiber optic communications, optical spectroscopy, 3D entertainment, and in aerospace. Iridian was ranked as one of the top 150 high technology companies in Canada in the 2011 and 2012 Branham300 rankings and won the 2010 Canada Export Achievement Award for the province of Ontario sponsored by Profit magazine together with Export Development Corporation (EDC). Iridian is a global supplier with distributors in many countries particularly in Asia.

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