Simultaneous observation of second-harmonic emission and three-photon excited photoluminescence from hybrid vapor phase epitaxy-grown GaN film

Chao Kuei Lee, Fu Jen Kao, Shing Chung Wang*, Ci Ling Pan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Nonlinear optical properties of the undoped hybrid vapor phase epitaxy-grown (GaN film sample) were investigated and analyzed using a tunable femtosecond laser as an excitation source. As the laser wavelength was tuned from 762-796 nm, the sample emitted signals corresponding to the second-harmonic wavelength from 381-398 nm with a quadratic power dependence. A strong three-photon-process-related signal at 367 nm with cubic power dependence was simultaneously observed for the first time.

Original languageEnglish
Pages (from-to)6805-6806
Number of pages2
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume40
Issue number12
DOIs
StatePublished - Dec 2001

Keywords

  • Confocal microscopy
  • Gallium nitride
  • Nonlinear optics
  • Second harmonic generation (SHG)
  • Three-photon excitation

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