Topic
Semiconductor optical gain
About: Semiconductor optical gain is a research topic. Over the lifetime, 5997 publications have been published within this topic receiving 96505 citations.
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TL;DR: In this article, the exact closed form solution of the coupled-mode equations describing frequency converters based on cross-gain modulation in semiconductor optical amplifiers is given, and it is shown that the frequency response of the converter is strongly affected by the waveguide internal loss.
Abstract: We give the exact closed form solution of the coupled-mode equations describing frequency converters based on cross-gain modulation in semiconductor optical amplifiers. We show that the frequency response of the converter is strongly affected by the waveguide internal loss.
50 citations
TL;DR: A review of different mechanisms that have been proposed to explain the excess noise observed in semiconductor lasers, including imperfect anticorrelations in multimode lasers, and Petermann excess noise factor in single-mode lasers, can be found in this article.
Abstract: Single-mode laser theory for semiconductor lasers predicts sub-Poissonian light generation for a laser quietly driven far above threshold. Experiments have shown however that only few laser diodes exhibits such reduced intensity noise. We present a review of different mechanisms that have been proposed to explain the excess noise observed in semiconductor lasers, including imperfect anticorrelations in multimode lasers, and Petermann excess noise factor in single-mode lasers.
50 citations
TL;DR: Using high-bandwidth feedback, the pulse train from a mode-locked semiconductor laser to an external optical atomic clock signal is synchronized and the lowest timing jitter to date is achieved (22 fs, integrated from 1 Hz to 100 MHz) for such devices.
Abstract: Using high-bandwidth feedback, we have synchronized the pulse train from a mode-locked semiconductor laser to an external optical atomic clock signal and achieved what is to our knowledge the lowest timing jitter to date (22 fs, integrated from 1 Hz to 100 MHz) for such devices. The performance is limited by the intrinsic noise of the phase detector used for timing-jitter measurement. We expect such a highly stable device to play an important role in fiber-network-based precise time/frequency distribution.
50 citations
TL;DR: In this paper, an analytical treatment for carrier distribution in optical confinement layers (OCLs) of semiconductor lasers with bimolecular recombination is developed, and the effect of OCL recombination on the internal quantum efficiency of a laser is evaluated.
Abstract: An analytical treatment for carrier distribution in optical confinement layers (OCLs) of semiconductor lasers with bimolecular recombination is developed. On the basis of this approach, the effect of OCL recombination on the internal quantum efficiency of a laser is evaluated. It is shown that this effect can lead to a rapid deterioration in efficiency with increased waveguide thickness at high enough currents, and also contributes to the efficiency decrease with current in a given structure. An asymmetric, narrow waveguide structure is shown to avoid this problem while still providing a good-quality beam.
50 citations
TL;DR: In this paper, the absorption spectrum of water vapor in the (2, 1, 1) vibration-rotation band has been observed by using an AlGaAs semiconductor laser around 0.82 µm.
Abstract: The absorption spectrum of water vapor in the (2, 1, 1) vibration-rotation band has been observed by using an AlGaAs semiconductor laser around 0.82 µm. The laser frequency was stabilized to one of the absorption lines by controlling the injection current. A frequency stability of 1.9×10-9≧σ≧1.1×10-11 was obtained for 10 ms≦τ≦500 s.
50 citations