Single mode interband cascade lasers based on lateral metal gratings
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Single mode distributed feedback (DFB) interband cascade lasers were realized by placing metal gratings laterally to dry etched ridges. A discrete tuning range of 104 nm could be realized on the same gain material by a variation of the grating period. At room temperature, a 2.4 mm long and 9.8 μm wide ridge with as-cleaved facets emitted more than 6 mW of single mode output power in continuous-wave (cw) mode at a wavelength around 3.8 μm. With typical temperature- and current-tuning rates of 0.31 nm/ °C and 0.065 nm/mA, respectively, a total tuning bandwidth of more than 10 nm could be covered with a single device.
Weih , R , Naehle , L , Hoefling , S , Koeth , J & Kamp , M 2014 , ' Single mode interband cascade lasers based on lateral metal gratings ' Applied Physics Letters , vol. 105 , no. 7 , 071111 . DOI: 10.1063/1.4893788
Applied Physics Letters
Copyright 2014 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Weih, R., Naehle, L., Hoefling, S., Koeth, J., & Kamp, M. (2014). Single mode interband cascade lasers based on lateral metal gratings. Applied Physics Letters, 105(7), and may be found at http://dx.doi.org/10.1063/1.4893788
DescriptionThe authors are grateful to the European Union for financial support of this work within the FP7 project “WideLase” (No. 318798).
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