Donald W Mcdaniel

US Patent:

20220229307, Jul 21, 2022

Filed:

Jan 17, 2022

Appl. No.:

17/577168

Inventors:

- Shizuoka, JP
Kosuke Saito - Hamamatsu-shi, JP
Alexander Cutler - Hopkinton MA, US
Jonathan P. Murray - Chelmsford MA, US
Donald L. McDaniel - North Andover MA, US
Huiling Zhu - Lexington MA, US

Assignee:

Hamamatsu Photonics K.K. - Shizuoka

International Classification:

G02B 27/10
G02B 26/00

Abstract:

A spectrally-shaped source includes a source that generates a round beam. An optical element transforms the round beam to a rectangular beam. An image forming dispersive device angularly disperses wavelengths and images the rectangular beam at a modulation plane. A pixelated SLM is illuminated by the dispersed wavelengths of the rectangular beam such that each column of illuminated pixels is illuminated by a different wavelength. Toroidal optics projects light directed from the SLM to an output plane and focuses the angularly dispersed wavelengths of the beam so that a selected portion of the optical beam is reflected toward the toroidal optic by the SLM. A controller instructs the pixelated SLM to selectively reflect the portion of the optical beam toward the toroidal optic and to selectively reflect another portion of the beam away from the toroidal optic so as to provide a desired spectral shape.