Extraordinary optical gain from silicon implanted with erbium
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Electrically pumped photonic crystal distributed feedback quantum cascade lasers
Appl. Phys. Lett. 91, 141123 (2007); doi:10.1063/1.2798062
Published 5 October 2007
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We demonstrate electrically pumped, room temperature, single mode operation of photonic crystal distributed feedback (PCDFB) quantum cascade lasers emitting at 
~4.75 µm. Ridge waveguides of 100 µm width were fabricated with both PCDFB and Fabry-Pérot feedback mechanisms. The Fabry-Pérot device has a broad emitting spectrum and a double lobed far-field character. The PCDFB device, as expected, has primarily a single spectral mode and a diffraction limited far field characteristic with a full angular width at half maximum of 2.4°. This accomplishment represents the first step in power scaling of single mode, midinfrared laser diodes operating at room temperature.
©2007 American Institute of Physics
~4.75 µm. Ridge waveguides of 100 µm width were fabricated with both PCDFB and Fabry-Pérot feedback mechanisms. The Fabry-Pérot device has a broad emitting spectrum and a double lobed far-field character. The PCDFB device, as expected, has primarily a single spectral mode and a diffraction limited far field characteristic with a full angular width at half maximum of 2.4°. This accomplishment represents the first step in power scaling of single mode, midinfrared laser diodes operating at room temperature.
©2007 American Institute of Physics
| History: | Received 10 August 2007; accepted 20 September 2007; published 5 October 2007 |
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http://link.aip.org/link/?APPLAB/91/141123/1 |
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0003-6951 (print)
1077-3118 (online)
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