? ~ 3.35 µm distributed-feedback quantum-cascade lasers with high-aspect-ratio lateral grating
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Slight, T. and Tandoi, G. and Revin, D. and McKee, A. and Zhang, S. and Meredith, W. and Cockburn, J. et al. 2011. ? ~ 3.35 µm distributed-feedback quantum-cascade lasers with high-aspect-ratio lateral grating. IEEE Photonics Technology Letters. 23 (7): pp. 420-422.
IEEE Photonics Technology Letters
Department of Physics and Astronomy
We report the development of room-temperature distributed-feedback quantum-cascade lasers operating in a single mode in the 3.34 to 3.35 μm wavelength range. First-order lateral gratings with high aspect ratio (the ratio between the grating etch depth and its period) were formed using inductively coupled plasma etching. The as-cleaved lasers emit in pulsed regime with a sidemode suppression ratio of up to 24 dB and a peak single-mode output power of 130 mW from a single facet.
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