Broadband laser source

Details Broadband laser source Broadband laser source

2005-05-31

2005-05-31

Harvey, Minsun Oh (Department: 2828)

Coherent light generators

Particular beam control device

Tuning

C372S006000, C372S013000, C372S028000, C372S032000, C372S092000, C372S094000

Reexamination Certificate

active

06901087

ABSTRACT:
A broadband laser source comprising: a resonant cavity (1) containing a medium (2) which emits optical energy (3) in a continuum of wavelengths in response to application of pump energy (4) to the medium (2); a source of pump energy (5) for producing said optical energy (3); a frequency shifter (6) within the resonant cavity (1); and a tuneable spectral filter (7) within the resonant cavity (1), and the apparatus being such that in use the tuneable spectral filter (7) has a peak wavelength which is repeatedly swept in a substantially resonant fashion over a wavelength range equal to, or a fraction of, a linewidth of the broadband source such that the rate of change of the peak wavelength of the tuneable spectral filter (7) is substantially equal to the rate of change of the frequency of the optical energy (3) as it is frequency shifted within the resonant cavity (1) by the frequency shifter (6).

REFERENCES:
patent: 5189676 (1993-02-01), Wysocki et al.
patent: 5786930 (1998-07-01), Takatsu et al.
patent: 0 524 382 (1992-04-01), None
patent: 0 524 382 (1992-04-01), None
patent: 000524382 (1993-01-01), None
P.F. Wysocki, M.J.F. Digonnet, and B.Y. Kim, “Broad-spectrum, wavelength-swept, erbium-doped fiber laser at 1.55 μm”, Optics Letters, Aug. 15, 1990 vol. 15, No. 16, pp. 879-881.

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