Coherent addition of AlGaAs lasers using microlenses and diffractive coupling
Leger, James R. ; Scott, Miles L. ; Veldkamp, Wilfrid B.
Woodbury, NY : American Institute of Physics (AIP)
Published 1988
Woodbury, NY : American Institute of Physics (AIP)
Published 1988
| ISSN: |
1077-3118
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|---|---|
| Source: |
AIP Digital Archive
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| Topics: |
Physics
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| Notes: |
A near single-lobed far-field pattern was obtained from coherent operation of a nonevanescently coupled AlGaAs laser diode array. A diffractive microlens array collimated the individual beams to approximate a plane wave, and diffractive coupling from an external cavity mirror provided mutual coherence. A diffraction-limited far-field pattern was observed with 82% of the power contained in the central lobe. The method is directly applicable to two-dimensional laser arrays and can be implemented as a single thin optical element.
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| Type of Medium: |
Electronic Resource
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| URL: |