Spectral beam combining of a broad-stripe diode laser array in an external cavity.
The outputs from an 11-element, linear diode laser array with broad stripes have been beam combined into a single beam with a beam quality of ~20x diffraction limited in the plane of the junction. This beam combining was achieved by use of a common external cavity containing a grating, which simultaneously forces each array element to operate at a different, but controlled, wavelength and forces the beams from all the elements to overlap and propagate in the same direction. The power in the combined beam was 50% of the output from the bare laser array.
Daneu
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V
Sanchez
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A
Fan
T Y
TY
Choi
H K
HK
Turner
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GW
Cook
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CC