High-Power Continuous-Wave Operation of BeZnCdSe Single-Quantum-Well Green Laser Diodes

The laser performance of BeZnCdSe single-quantum-well green laser diodes (LDs) was improved. In particular, high-power lasing over 50 mW was achieved. The high-resolution lasing spectrum indicates a peak wavelength of 536 nm. The far-field patterns (FFPs) of the 5-μm-wide mesa LDs show unimodal char...

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Bibliographic Details
Published in:Applied physics express 2012-06, Vol.5 (6), p.062101-062101-3
Main Authors: Fujisaki, Sumiko, Kasai, Jun-ichi, Akimoto, Ryouichi, Tanaka, Shigehisa, Tsuji, Shinji, Hasama, Toshifumi, Ishikawa, Hiroshi
Format: Article
Language:English
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Summary:The laser performance of BeZnCdSe single-quantum-well green laser diodes (LDs) was improved. In particular, high-power lasing over 50 mW was achieved. The high-resolution lasing spectrum indicates a peak wavelength of 536 nm. The far-field patterns (FFPs) of the 5-μm-wide mesa LDs show unimodal characteristics, and the perpendicular and horizontal beam-divergence angles for full width at half maximum are 21 and 2.2°, respectively. The wall-plug efficiency (WPE) of the 2-μm-wide mesa LDs is 3.6% at an optical output power of 50 mW. The internal loss ($\alpha_{\text{i}}$) and internal differential quantum efficiency ($\eta_{\text{i}}$) of the 10-μm-wide-mesa LDs were estimated to be 3.5 cm -1 and 0.22, respectively.
ISSN:1882-0778
1882-0786
DOI:10.1143/APEX.5.062101