Cavity design of laterally coupled all-solid state laser arrays with Talbot effect

Yuko Kono; Masahiro Takeoka; Atsushi Uchida; Fumihiko Kannari

doi:10.1117/12.349245

24 May 1999 Cavity design of laterally coupled all-solid state laser arrays with Talbot effect

Yuko Kono, Masahiro Takeoka, Atsushi Uchida, Fumihiko Kannari

Proceedings Volume 3611, Laser Resonators II; (1999) https://doi.org/10.1117/12.349245
Event: Optoelectronics '99 - Integrated Optoelectronic Devices, 1999, San Jose, CA, United States

Abstract

Brighter far-field pattern of a phase-locked Nd:YAG microchip laser array was obtained by the Talbot effect in a three-mirror cavity. The laterally coupled Nd:YAG microchip laser array produced a pair of spots with sharper peaks with an angular separation of (lambda) /d in its far-field, where d is the distance between the adjacent sources, indicating an out-of-phase spatial mode coupling was improved. The far- field spot size is reduced by a factor of 9.3 compared with that obtained by incoherent pile of the individual microchip laser outputs. We demonstrated that the far-field pattern is improved by enhancing the self-imaging with side mirrors which make the array source disguise an infinity. A mode selecting slit placed right after the crystal is also effective to stabilize the out-of-phase mode.

Citation Download Citation

Yuko Kono, Masahiro Takeoka, Atsushi Uchida, and Fumihiko Kannari "Cavity design of laterally coupled all-solid state laser arrays with Talbot effect", Proc. SPIE 3611, Laser Resonators II, (24 May 1999); https://doi.org/10.1117/12.349245

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