Single-mode distributed-feedback 761-nm GaAs-AlGaAs quantum-well laser

We have developed single-mode distributed-feedback 761-nm GaAs-AlGaAs quantum well lasers as sources for O 2 sensing through laser absorption spectroscopy. Devices containing a 4-μm-wide ridge waveguide exhibit low threshold currents of 25 mA and quantum efficiencies greater than 35% at output power...

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Bibliographic Details
Published in:IEEE photonics technology letters 1995-05, Vol.7 (5), p.455-457
Main Authors: Morris, N.A., Connolly, J.C., Martinelli, R.U., Abeles, J.H., Cook, A.L.
Format: Article
Language:English
Subjects:
Distributed feedback devices
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Gas lasers
Holographic optical components
Laser tuning
Lasers
Optical interferometry
Optics
Physics
Quantum well lasers
Semiconductor lasers
laser diodes
Spectroscopy
Surface emitting lasers
Threshold current
Waveguide lasers
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Summary:We have developed single-mode distributed-feedback 761-nm GaAs-AlGaAs quantum well lasers as sources for O 2 sensing through laser absorption spectroscopy. Devices containing a 4-μm-wide ridge waveguide exhibit low threshold currents of 25 mA and quantum efficiencies greater than 35% at output powers in excess of 25 mW. The spectral linewidths of these devices are 12.0 MHz at 15 mW. Temperature- and current-tuning rates are 0.06 nm//spl deg/C and 0.0075 nm/mA (-3.9 GHz/mA), respectively. The devices display smooth, continuous, single-mode wavelength tuning over a 4.2 nm interval.
ISSN:1041-1135
1941-0174
DOI:10.1109/68.384508