Realization of spectrally engineered semiconductor Fabry-Perot lasers with narrow geometrical tolerances

Adolfsson, Göran,1981Chalmers tekniska högskola,Chalmers University of Technology (författare)

Spectrally engineered semiconductor Fabry-Perot laser resonators are designed to enhance the optical feedback for selected longitudinal modes, which thereby require less gain for lasing. This is achieved by introducing refractive index perturbations along the length of the resonator. However,the physical realization of these resonators is a challenge because of very narrow tolerances; in particular the need for precise positioning of the end facets of the resonator in relation to the perturbations, and the excess propagation loss associated with the perturbations, has been a majorconcern. We report on a method to achieve high-quality end facet mirrors enabling precise positioning relative to the perturbations, the latter which are realized as lateral corrugations of the waveguide. Measurements show that the mirror quality is comparable to that of cleaved mirrorsand that the additional loss introduced by the perturbations adds

Bengtsson, Jörgen,1968Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)jorgenb (författare)
Haglund, Åsa,1976Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)gu95asha (författare)
Nilsson, Bengt,1954Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)beni (författare)
Larsson, Anders,1957Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)andersla (författare)
Chalmers tekniska högskola (creator_code:org_t)

Ingår i:Journal of Applied Physics: AIP Publishing109:9, s. 093112-0021-89791089-7550

Av författaren/redakt...: Adolfsson, Göran ...; Bengtsson, Jörge ...; Haglund, Åsa, 19 ...; Nilsson, Bengt, ...; Larsson, Anders, ...

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