Singlemode laser source tunable in wavelength with a self-aligne

Details Singlemode laser source tunable in wavelength with a self-aligne Singlemode laser source tunable in wavelength with a self-aligne

1995-05-01

1997-01-14

Bovernick, Rodney B.

Coherent light generators

Particular beam control device

Tuning

372102, H01S 310

Patent

active

055947441

ABSTRACT:
This invention relates to a singlemode laser source tunable in wavelength with a self-aligned external cavity, comprising: a resonant cavity having an output face that is partially reflecting (331) and a retroreflecting dispersive device (31, 39), defining a main collimating axis (351) and a secondary collimating axis (381), an amplifier wave guide (33) placed in position inside the resonant cavity. The retroreflecting dispersive device comprises a plane diffraction grating (31) having dispersion planes and an orthogonal reflecting dihedral (39) whose line of intersection (391)is parallel to the dispersion plane of the diffraction grating containing the collimating axes (351, 352).

REFERENCES:
patent: 5379310 (1995-01-01), Papen et al.
Patent Abstracts of Japan, vol. 6, No. 185 (E-132) [063], Sep., 1982 & JP-A-57 099793 (T. Tomijima) 21 Jun., 1981.
Optics Letters, vol. 6, No. 3, Mar. 1981 Washington, US, pp. 117-118, K. Liu, M. G. Littman "Novel Geometry for Single-Mode Scanning of Tunable Lasers".
Electronic Letters, vol. 27, No.2, 17 Jan. 1991, Stevenage, GB, pp. 183-184, XP 000201222, F. Favre, D. Le Guen, "82nm of Continuous Tunability for an External Cavity".
WO-A-94 08371 (F. S. Luecke) 14 Apr. 1994, p. 6, line 21; p. 12, line 3, figures 1-7.

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