Multiple feedback effects in asymmetric external cavity semiconductor lasers

Journal Article · Wed Nov 01 04:00:00 EST 1989 · IEEE (Institute of Electrical and Electronics Engineers) Journal of Quantum Electronics; (USA)

DOI:https://doi.org/10.1109/3.42051· OSTI ID:5364240

Seo, D S; Park, J D; McInerney, J G; Osinski, M ^[1]

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1. New Mexico Univ., Albuquerque, NM (USA). Center for High Technology Materials

The authors present a systematic study of multiple feedback effects on the output power and spectral characteristics of an external cavity semiconductor laser with asymmetric feedback induced by misalignment of an external mirror. The external mirror tilt modifies the roundtrip phase condition as well as the coupling efficiency. Undulations in power as a function of external mirror tilt have been observed. At particular tilt angles where strong interaction between odd-order round-trip beams and even-order round-trip beams occurs, unique optical spectra featuring double peaks within a compound-cavity mode spectrum, or uneven compound-cavity mode spacings, have been observed. They set up a quasi-static model for asymmetric external cavity systems which explains qualitatively the power undulations and complex spectral characteristics. The model also predicts the existence of two nearby phase-matched mode groups which may result in complex and chaotic instabilities.

• OSTI ID: 5364240
• Journal Information: IEEE (Institute of Electrical and Electronics Engineers) Journal of Quantum Electronics; (USA), Journal Name: IEEE (Institute of Electrical and Electronics Engineers) Journal of Quantum Electronics; (USA) Vol. 25:11; ISSN 0018-9197; ISSN IEJQA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
ASYMMETRY
FEEDBACK
LASER CAVITIES
LASERS
MODE SELECTION
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SOLID STATE LASERS