I have one, mounted, intracavity type, not the astronomy type, , with micrometer, green-yellow-orange- red at Brewster's Angle for one polarization, but my initial cost is/was rather expensive. Ie 400$ in 1990s dollars. Its ITAR, so shipping outside the US will get me in trouble, and thus will NOT happen. Within US, Ok..
Intracavity means it has a massive loss for one polarization except for the wavelength selected.
Astronomy Lyots are just what you would think, a true out of the box tunable filter.
Steve
Last edited by mixedgas; 02-08-2022 at 12:27.
Qui habet Christos, habet Vitam!
I should have rented the space under my name for advertising.
When I still could have...