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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 20, Iss. 17 — Sep. 1, 1995
  • pp: 1788–1790

Spectral linewidth of a free-running continuous-wave single-frequency external-cavity quantum-well InGaAs/AlGaAs diode laser

L. Hsu, A. Mooradian, and R. L. Aggarwal  »View Author Affiliations


Optics Letters, Vol. 20, Issue 17, pp. 1788-1790 (1995)
http://dx.doi.org/10.1364/OL.20.001788


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Abstract

The linewidth of a room-temperature free-running 940-nm cw single-frequency 1-mm-long quantum-well InGaAs/AlGaAs diode laser in a 10-cm-long external cavity has been measured as a function of the output power by the heterodyne technique. The power-dependent component of the observed Lorentzian linewidth displays a linewidth–power product of 28 ± 4 kHz mW, which is 2 orders of magnitude larger than that predicted from the spontaneous emission model. The shot-noise model of Welford and Mooradian [Appl. Phys. Lett. 40, 560 (1982)] for the power-independent linewidth has been extended to account for the observed power-dependent linewidth.

© 1995 Optical Society of America

History
Original Manuscript: May 5, 1995
Published: September 1, 1995

Citation
L. Hsu, A. Mooradian, and R. L. Aggarwal, "Spectral linewidth of a free-running continuous-wave single-frequency external-cavity quantum-well InGaAs/AlGaAs diode laser," Opt. Lett. 20, 1788-1790 (1995)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-20-17-1788

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