Publication

2-μm wavelength range InGa(Al)As/InP-AlGaAs/GaAs wafer fused VCSELs for spectroscopic applications

Elyahou Kapon, Alok Rudra, Vladimir Iakovlev
2008
Conference Papers

Abstract

We demonstrate 2-mu m wavelength, wafer-fused InGa(Al)As/InP-AlGaAs/GaAs vertical-cavity surface-emitting lasers (VCSELs) emitting single-mode power of 0.5 mW at room-temperature with a threshold current of 4mA and side-mode suppression ratio of over 30 dB. Emission wavelength can be continuously tuned with current by similar to 5 nm without mode hopping with a tuning rate of 0.31 nm/mA. These features demonstrate the long wavelength VCSELs potential for gas sensing and other optical spectroscopy applications.

Official source

https://infoscience.epfl.ch/entities/publication/5cf1fbcb-d840-4dc8-ba5f-df2474f6f981

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Elyahou Kapon, Alok Rudra, Vladimir Iakovlev
2008
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/5cf1fbcb-d840-4dc8-ba5f-df2474f6f981

About this result

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An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. An optical amplifier may be thought of as a laser without an optical cavity, or one in which feedback from the cavity is suppressed. Optical amplifiers are important in optical communication and laser physics. They are used as optical repeaters in the long distance fiberoptic cables which carry much of the world's telecommunication links.

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