Coherent light generators – Particular resonant cavity – Folded cavity
Patent
1992-11-03
1996-04-02
Lee, John D.
Coherent light generators
Particular resonant cavity
Folded cavity
356350, 372 6, 372 20, H01S 3083
Patent
active
055047718
ABSTRACT:
A single-frequency fiber-optic ring laser exhibits improved frequency stability, reduced laser intensity noise, broad tunability and narrow linewidth. The fiber-optic ring laser includes a ring-resonator with a length of single-mode optical fiber, a gain medium of rare earth-doped fiber, a broad-band fiber Fabry-Perot filter for wavelength tuning of the laser, a narrow-band fiber Fabry-Perot filter for suppression of longitudinal ring modes and an optical isolator for preventing interetalon interactions between the tandem fiber Fabry-Perot filters. Selective positioning of the tandem fiber Fabry-Perot filters, relative to the ring laser's gain medium and output coupler, results in laser intensity noise reduction to the standard quantum limit.
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Dawson Jay W.
Park Namkyoo
Sanders Steve
Vahala Kerry J.
California Institute of Technology
Lee John D.
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