Coherent light generators – Particular beam control device – Tuning
Patent
1996-11-13
1998-09-01
Bovernick, Rodney B.
Coherent light generators
Particular beam control device
Tuning
372 99, 372102, H01S 310
Patent
active
058020853
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: 5594744 (1997-01-01), Lefevre et al.
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, Jan. 17, 1991, Stevenage, GB, pp. 183-184, XP 000201222, F. Favre, D. Le Guen, "82nm of Continuous Tunability for an External Cavity".
Optics Letters, vol. 17, No. 14, Jul. 15, 1992, New York, U.S. pp. 997-999, XP 000288960 G.Z. Zhang, K. Hakuta "Scanning Geometry for Broadly Tunable Single-Mode Pulsed Dye Lasers".
Applied Optics, vol. 23, No. 24, Dec. 15, 1984, New York, US, pp. 4465-4468, M.G. Littman "Single-Mode Pulsed Tunable Dye Laser".
Conference on Lasers and Electro-Optics (CLEO)--Technical Digest Series, vol. 12, May 10, 1992 Washington, pp. 306-308, XP 000351496 R.S. Putman "Laser-Mode Spacing is Independent of Cavity Length".
Disdier Laurent
Graindorge Philippe
LaLoux Bernard
Lefevre Herve
Martin Philippe
Bovernick Rodney B.
Photonetics S.A.
Wise Robert E.
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