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Theory of grating-confined broad-area lasers
1998 / IEEE
This item was taken from the IEEE Periodical ' Theory of grating-confined broad-area lasers ' Angled-distributed-feedback semiconductor lasers have demonstrated 1-W diffraction-limited collimated output from a broad-area aperture. We present the first theoretical analysis of the modes of these devices, explaining their principle of operation and the reasons for their high spatial mode quality. A transfer matrix analysis is presented that can describe the general class of grating-guided waveguides with either finite and/or infinite grating boundaries. Lateral grating-confined broad-area waveguides are shown to have extremely high spatial mode selectivity. The theory is applied to describe the new angled-grating distributed feedback laser (/spl alpha/-DFB), predicting a broad near-Gaussian near field and a collimated diffraction-limited far field, in good agreement with experiment.
Collimated Diffraction-limited Far Field
Grating-confined Broad-area Laser Theory
Angled-distributed-feedback Semiconductor Lasers
Diffraction-limited Collimated Output
High Spatial Mode Quality
Transfer Matrix Analysis
Infinite Grating Boundaries
Finite Grating Boundaries
Lateral Grating-confined Broad-area Waveguides
High Spatial Mode Selectivity
Broad Near-gaussian Near Field
Distributed Feedback Devices
Transmission Line Matrix Methods
Distributed Feedback Lasers
Photonics And Electrooptics
Engineered Materials, Dielectrics And Plasmas
Principle Of Operation