22 April 2016 Power scaling of a wavelength-narrowed diode laser system for pumping alkali vapors
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Proceedings Volume 9729, High Energy/Average Power Lasers and Intense Beam Applications IX; 972905 (2016); doi: 10.1117/12.2211356
Event: SPIE LASE, 2016, San Francisco, California, United States
Abstract
We report a method for locking the output wavelength and reducing the spectral linewidth of diode lasers by feeding back light to the emitters from a wavelength selective external optical cavity. Ten years ago our team developed a stepped-mirror that allowed a single external cavity to lock the wavelength of a stack of diode array bars by equalizing path lengths between each emitter and the grating. Here we report combining one such step-mirror external cavity with an array of power dividers, each sending a portion of this feedback power to a separate diode array bar stack.
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F. W. Hersman, J. H. Distelbrink, J. Ketel, J. Wilson, D. W. Watt, "Power scaling of a wavelength-narrowed diode laser system for pumping alkali vapors", Proc. SPIE 9729, High Energy/Average Power Lasers and Intense Beam Applications IX, 972905 (22 April 2016); doi: 10.1117/12.2211356; http://dx.doi.org/10.1117/12.2211356
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KEYWORDS
Diodes

Mirrors

Semiconductor lasers

Telescopes

Laser systems engineering

Photons

Diffraction gratings

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