Rapidly tunable laser

Details Rapidly tunable laser Rapidly tunable laser

H - Electricity

01

S

345/46

H01S 3/00 (2006.01) H01S 3/1055 (2006.01)

Patent

CA 1223949

ABSTRACT OF THE DISCLOSURE A rapidly turnable laser wherein the optical reso- nating cavity is defined by a partially reflecting plane mirror and a rotating faceted polygonal solid. A Brewster window is adapted to sequentially select and direct one and only one of the wavelengths of light from the beam emitted by the lasers amplifying medium along a path back through the lasers amplify- ing medium as the faceted polygonal solid is continuously rotated. One embodiment of the present invention forms the rotating reflecting solid as having at least one face thereof being a Littrow reflective grating. A pulsed laser is adapted to tune to a different wavelength of light each time some or all of the grating faces of the polygonal solid are rotated to intercept the longitudinal axis of the laser. A second embodiment forms the rotating reflecting solid which reflects laser light to a single stationary Littrow grating. A third embodiment produces pairs of output pulses where the pair mem- bers are separated by a short time interval.

434870

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