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METHOD AND APPARATUS FOR SPECTRAL NARROWING AND WAVELENGTH STABILIZATION OF BROAD-AREA LASERS
METHOD AND APPARATUS FOR SPECTRAL NARROWING AND WAVELENGTH STABILIZATION OF BROAD-AREA LASERS
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机译:广域激光光谱窄度和波长稳定的方法和装置
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摘要
Methods and apparatus for spectral narrowing and wavelength stabilization of broad-area lasers, such as an apparatus including a broad-area laser source configured to emit light along an emission axis in an emission pattern extending along the emission axis, and a single-mode fiber Bragg grating, such as a single-mode core incorporating a fiber Bragg grating embedded in a core of a dual-clad fiber, the single-mode fiber Bragg grating configured to spectrally selectively reflect back light from a sub-aperture portion of the emitted light to the broad-area laser source. The single mode core having the FBG is off-axis in comparison to the central axis of the double-clad fiber and allows for frequency stabilization of the broad area laser diode output improving its performance as pump laser for a doped fibre amplifier.
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