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High Power 1.5 μm Broad Area Laser Diodes Wavelength Stabilized by Surface Gratings

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Details

Original languageEnglish
Pages (from-to)1870-1873
Number of pages4
JournalIEEE Photonics Technology Letters
Volume30
Issue number21
Early online date19 Sep 2018
DOIs
Publication statusPublished - 1 Nov 2018
Publication typeA1 Journal article-refereed

Abstract

Wavelength stabilization against temperature variation of high-power broad area 1.5 μm InGaAsP/InP laser diodes is demonstrated by employing surface gratings. The development targets application in eye-safe automotive LIDAR systems, which would benefit from deploying narrow band receiver filters to block ambient solar radiation for improved signal-to-noise ratio. The surface grating is monolithically integrated on the laser chip using nanoimprint lithography. The peak power of the lasers exceeded 6 W in pulsed mode, for a FWHM spectral width of 0.3 nm, and a peak wavelength drift of only 0.1 nm/°C. The wavelength shift with temperature is reduced by five times compared to broad area high-power Fabry-Perot laser diodes typically employed in LIDAR systems.

Keywords

  • Diode laser, Distributed Bragg reflectors, High power, LIDAR

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