publication . Article . 2003

Experimental analysis of a broadly tunable InGaAsP laser with compositionally varied quantum wells

S.C. Woodworth; D.T. Cassidy; M.J. Hamp;
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  • Published: 07 Mar 2003 Journal: IEEE Journal of Quantum Electronics, volume 39, pages 426-430 (issn: 0018-9197, Copyright policy)
  • Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Abstract
Custom-designed InGaAsP lasers have been fabricated, tested, and show a broad spectral output at a bias current of 240 mA. The Fabry-Perot ridge waveguide lasers were grown with one 80-/spl Aring/ and five 100-/spl Aring/ quantum wells in the active region. A different material composition was used for each well and this provided contributions to the gain profile over a broad wavelength range. A 1400-/spl mu/m cavity length laser was found to operate in the spectral region from 1475 to 1650 nm and single-mode operation on the individual Fabry-Perot modes of the uncoated laser was achieved over a 172-nm tuning range using a diffractive optical element short exter...
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