8 February 2012 Long wavelength surface-emitting distributed feedback (SE-DFB) laser for range finding applications
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Abstract
We report on our progress to obtaining a 1540 nm SE-DFB laser with curved, second order grating capable of producing extremely high peak power for eye-safe range finding applications. Higher peak power can be extracted from SE-DFB lasers since the emission area is three orders of magnitude larger than for edge emitters. Ten-times narrower spectral width and four-times lower thermal shift of emission wavelength allows for the use of narrower filters on the range finder detector, providing a higher signal-to-noise ratio. Furthermore, a curved second-order diffraction grating in our SE-DFB laser allows for a higher brightness source, which makes transmitter optics geometry more compact and simpler.
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Toby J. Garrod, Don Olson, Yan Xiao, Manoj Kanskar, "Long wavelength surface-emitting distributed feedback (SE-DFB) laser for range finding applications", Proc. SPIE 8241, High-Power Diode Laser Technology and Applications X, 824113 (8 February 2012); doi: 10.1117/12.909639; https://doi.org/10.1117/12.909639
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