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Proceedings Paper

High-power monolithic single-mode diode lasers employing active photonic lattices
Author(s): Dan Botez
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Paper Abstract

Photonic-lattice structures with modulated gain, that is active photonic lattices (APLs), of large index steps and gain preferentially enhanced on the low-index lattice sites have been used, as early as 1988, for effective lateral-mode control range in large-aperture (100-200 microns) high-power coherent devices. Photonic-bandpass (PBP) structures relying on long-range resonant leaky-wave coupling, so called ROW arrays, have allowed stable, near-diffraction-limited beam operation to powers as high as 1.6W CW and 10W peak pulsed. Photonic-bandgap (PBG) structures with a built-in lattice defect, so called ARROW lasers, have provided up to 0.5W peak-pulsed stable, single-mode power and hold the potential for 1W CW reliable single-mode operation from apertures 8-10 microns wide. The solution for high-efficiency surface emission, from 2nd-order DFB/DBR lasers, in an orthonormal, single-lobe beam pattern was found in 2000. Recently, single-lobe and single-mode operation in a diffraction-limited beam orthonormal to the chip surface was demonstrated from 1.5mm-long DFB/DBR ridge-guide lasers. That opens the way for the realization of 2-D surface-emitting,2nd-order APLs for the stable generation of watts of CW single-lobe, single-mode power from large 2-D apertures, as well as scalability of such devices at the wafer level.

Paper Details

Date Published: 19 June 2003
PDF: 8 pages
Proc. SPIE 4993, High-Power Fiber and Semiconductor Lasers, (19 June 2003); doi: 10.1117/12.479510
Show Author Affiliations
Dan Botez, Univ. of Wisconsin/Madison (United States)

Published in SPIE Proceedings Vol. 4993:
High-Power Fiber and Semiconductor Lasers
Mahmoud Fallahi; Jerome V. Moloney, Editor(s)

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