Encyclopedia of laser physics and technology

Wiretapped had written this in response to

: Does anyone know the best way to tell the origin of location of a laser which is operating at ~905nm?

snipped-for-privacy@rp-phot> This should be of interest for many readers of this group:

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Follow the cord, maybe?

What are you actually trying to do?

Cheeers

Phil Hobbs

Phil Hobbs wrote in news: snipped-for-privacy@electrooptical.net:

AFAIK, 905nm happens to be the wavelength used by police lidar.

Brian

Just about all night vision scopes can "see" 905 nanometer (nm) radiation. So can most cheap silicon CCD cameras which haven't been equipped with an infrared blocking filter. The beam may need to be pointed near the camera to produce enough scatter to be "visible" as it would to see a typical red laser pointer naked eye. A Gen3 intensifier will be about ten times more sensitive than a Gen1 or 2 at

905nm. That would be my choice for locating a 905nm laser at night. In the daytime I'd use a silicon ccd with a narrow bandpass filter to block all other wavelengths. An image intensifier is more likely to be damaged if exposed to sunlight. 905 NM is used for many things such as laser rangefinders and illuminators for night vision scopes. So are lasers at 808 (slightly visible), 850, and 920 nm. Those are all diode lasers and reasonably affordable.