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- W4240002917 abstract "Lasers use a fraction of spontaneously emitted light as input and amplify the fraction by stimulated emission. To feed back the light, optical resonators, or optical cavities, which consist of reflectors, are adopted. Optical resonators are divided into three groups, whose constituent components are mirrors, diffraction gratings, and periodic multilayers. This chapter shows a Fabry-Perot cavity, a ring cavity with mirrors, and a ring cavity with a circular waveguide. It also illustrates distributed feedback (DFB) and a distributed Bragg reflector (DBR). The DFB has an active layer, which generates light, and an optical gain in its corrugated region, which functions by itself as an optical resonator. In contrast, the DBR does not have an active layer in its corrugated region and functions as a reflector, not as a resonator. Therefore, the DBR is combined with other DBRs or cleaved facets to form optical resonators. Controlled Vocabulary Terms diffraction gratings; diode lasers; distributed feedback devices; optical resonators; vertical cavity surface emitting lasers" @default.
- W4240002917 created "2022-05-12" @default.
- W4240002917 date "2010-11-01" @default.
- W4240002917 modified "2023-10-16" @default.
- W4240002917 title "Optical Resonators" @default.
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- W4240002917 doi "https://doi.org/10.1002/9780470769522.ch4" @default.
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