Diffraction-limited emission from a diode laser array in an apertured graded-index lens external cavity
- 15 September 1986
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 49 (11) , 614-616
- https://doi.org/10.1063/1.97613
Abstract
A gain-guided coupled-stripe GaAs/GaAlAs diode laser array in an external cavity configuration consisting of a graded refractive index lens and a 25-μm stripe apertured mirror was studied. Output power of almost 500 mW was obtained from the cavity under pulsed operation. A centered, single-lobed far-field radiation pattern which did not steer with the drive current was observed up to 4.1Ith. At 2Ith approximately 94% of the 102-mW output power is contained in the 0.8° full width half-maximum central lobe.Keywords
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