Device for frequency modulation of a laser output spectrum

Details Device for frequency modulation of a laser output spectrum Device for frequency modulation of a laser output spectrum

1984-07-17

1986-08-12

Scott, Jr., Leon

Coherent light generators

Particular beam control device

Modulation

372 32, 372 20, 372 54, 372 24, 372 70, H01S 310

Patent

active

046060316

ABSTRACT:
A device is provided for fast frequency modulating the output spectrum of multimode lasers and single frequency lasers that are not actively stabilized. A piezoelectric transducer attached to a laser cavity mirror is driven in an unconventional manner to excite resonance vibration of the transducer to rapidly, cyclicly change the laser cavity length. The result is a cyclic sweeping of the output wavelength sufficient to fill the gaps in the laser output frequency spectrum. When such a laser is used to excite atoms or molecules, complete absorption line coverage is made possible.

REFERENCES:
patent: 4081765 (1978-03-01), Berg et al.
patent: 4150342 (1979-04-01), Johnston, Jr. et al.
patent: 4187475 (1980-02-01), Wieder
patent: 4272734 (1981-06-01), Jarrett et al.
patent: 4509132 (1985-04-01), Kavaya
Jitschin et al; "Fast Freq. Control of a CW Dye Jet Laser"; Appl. Phys., 19(2) p. 181, 1979 (Feb.).
Jarrett et al; "Freq.-Stabilized CW Ring Dye Laser"; SPIE V. 247 Proc. Soc. Photo-Opt. Inst. Eng. (1980).
Jitschin et al; "Narrow-Bandwith CW Dye Laser with High Output Power"; SPIE V. 164 Fourth Europ. Electro-Opt. Conf., Oct. '78, p. 17.

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