0.98 mu m InGaAs-InGaAsP-InGaP GRIN-SCH SL-SQW lasers for coupling high optical power into single-mode fiber
1993; IEEE Photonics Society; Volume: 29; Issue: 6 Linguagem: Inglês
10.1109/3.234455
ISSN1558-1713
AutoresM. Ohkubo, Shu Namiki, T. Ijichi, Akira Iketani, Toshio Kikuta,
Tópico(s)solar cell performance optimization
ResumoA CW optical power of 75 mW coupled into a single-mode fiber (SMF) at a driving current of 200 mA was achieved by InGaAs-InGaAsP-InGaP graded-index separate-confinement-heterostructure strained-layer single-quantum-well (GRIN-SCH Sl-SQW) ridge waveguide lasers emitting at 0.98 mu m. The GRIN-SCH profile was optimized to minimize the series resistance due to spikes at GaAs-InGaP heterointerfaces. Highly efficient coupling into a SMF with cutoff wavelength of 0.88 mu m by precisely controlling the ridge mesa width (around 2 mu m) and reducing the aspect ratio of the far-field pattern to 1.9. As a result, 0.98- mu m InGaP cladding lasers show performance comparable to the conventional AlGaAs cladding lasers. >
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