A Coherent All-Solid-State Laser Array Using the Talbot Effect in a Three-Mirror Cavity

Yuko Kono, Masahiro Takeoka, Kenichi Uto, Atsushi Uchida, Fumihiko Kannari

Research output: Contribution to journalArticlepeer-review

46 Citations (Scopus)


Lateral mode coupling in a diode-pumped Nd: YAG microchip laser array is demonstrated with a Talbot cavity for the first time. The relatively low laser gains of solid-state lasers compared with diode lasers and CO2 lasers, to which the Talbot cavity has already been applied successfully, are solved by employing a novel auxiliary Talbot cavity configuration. A brighter twin-peak far-field pattern indicating an out-of-phase array mode, whose spot is 9.3 times smaller than that obtained by incoherent superposition of the individual microchip laser outputs, is obtained from the phase-locked microchip laser array with a mode-selecting slit. Without the mode-selecting slit, a far-field pattern with a single narrow peak is obtained, showing that the array is locked in an in-phase mode, presumably because of multiple reflections in the auxiliary Talbot cavity.

Original languageEnglish
Pages (from-to)607-614
Number of pages8
JournalIEEE Journal of Quantum Electronics
Issue number5
Publication statusPublished - 2000 May


  • Coherent laser array
  • LD-pumped solid-state laser
  • Microchip laser
  • Talbot cavity
  • Talbot effect

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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