25 July 1989 Low-Cost DH And Quantum Well Laser Array Development
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Abstract
We report on the initial results of a program aimed at developing low-cost diode laser arrays for use as solid-state laser pumps. Utilizing the Metal-Organic Chemical Vapor Deposition (MOCVD) technology, we have demonstrated excellent run-to-run reproducibility in emission wavelength, threshold current density and quantum effi-ciency. For four separate MOCVD growth runs involving a total of twenty 50 mm diameter wafers, we measured DH laser emission wave-lengths in the range of 811-813 nm. For this first experimental series, we achieved Jth values of approximately 1310 Amps/cm2 for broad area, unthinned devices from our growth runs. Differential quantum efficiencies of between 41% and 47% were measured on the non-facet-coated devices from all four runs. Single quantum well, separate confinement heterostructure lasers fabricated from wafers grown in the same MOCVD reactor exhibited near single-mode emission, with Jth values of approximately 300 Amps/cm2. Photolumines-cence data confirm quantum well widths of 80 Å and 150 Å for two different MOCVD growth runs.
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Kurt J. Linden, Kurt J. Linden, Leo M. Geoffroy, Leo M. Geoffroy, Scott F. Pesarcik, Scott F. Pesarcik, Carl J. Magee, Carl J. Magee, } "Low-Cost DH And Quantum Well Laser Array Development", Proc. SPIE 1062, Laser Applications in Meteorology and Earth and Atmospheric Remote Sensing, (25 July 1989); doi: 10.1117/12.951863; https://doi.org/10.1117/12.951863
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