Small line width tunable laser

Details Small line width tunable laser Small line width tunable laser

1991-01-25

1993-07-06

Scott, Jr., Leon

Coherent light generators

Particular beam control device

Tuning

372107, 372108, 372 98, 372 33, 372 9, 372 32, H01S 310

Patent

active

052260500

ABSTRACT:
For small line width tuning of a laser, especially a pulsed dye laser, a reference beam is uncoupled from the laser resonator (10,18) and directed to a beam position photosensor such as an adjacent pair of photo diodes. A control signal for synchronizing the movements of a grating (10) and an etalon (18) of the laser resonator is derived from a local change of the reference beam in order that synchronism may be achieved in the movement of both the etalon and the grating.

REFERENCES:
patent: 4864578 (1989-09-01), Proffitt et al.
patent: 4939739 (1990-07-01), Hobart et al.
patent: 5048031 (1991-09-01), Thonn
patent: 5081635 (1992-01-01), Wakabayashi et al.
Konig, et al., Article Published in J. Phys. E: Sci. Instrum. Small Line th Nanosecond Dye Laser of High Spectral Purity with Double Functional Grating, 1987.
Olcay, et al. Article Published in Applied Optics, Tuning of a Narrow Linewidth Pulsed Dye Laser with a Fabry-Perot and Diffraction Grating Over a Large Wavelength Range, vol. 24, No. 19, Oct. 1, 1985.

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