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Mid-infrared angled-grating distributed feedback laser
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DOI：10.1063/1.126617.png)
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We report near-diffraction-limited output from an angled-grating distributed feedback type-II W laser emitting near 3.4 mu m. For pulsed optical pumping of a 50-mu m-wide stripe at 78 K, the far-field beam divergence angle was only 1.4 degrees. The slope efficiency was 64% of that for a conventional Fabry-Perot laser on the same bar. However, the spectral linewidth decreased by only a factor of 2. The beam quality was substantially better than that for the Fabry-Perot laser out to stripe widths of at least 800 mu m. (C) 2000 American Institute of Physics. [S0003-6951(00)00422-8].
Keyword:
MIDINFRARED W-LASER
BOND HEAT SINKING
SEMICONDUCTOR-LASER
AMPLIFIER
CW
期刊
IF:
3.6
论文数:
10.4W
被引数:
17.8W
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OAAI分享收藏分享收藏Continuous-wave operation of λ=3.25 μm broadened-waveguide W quantum-well diode lasers up to T=195 K
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