Two-photon absorption study of GaN
Resource
Applied Physics Letters 76 (4): 439-441
Journal
Applied Physics Letters
Journal Volume
76
Journal Issue
4
Pages
439-441
Date Issued
2000
Author(s)
Abstract
Two-photon absorption coefficients of GaN for below band gap ultraviolet wavelength and midgap infrared wavelength were measured by using femtosecond pulsewidth autocorrelation and Z-scan techniques. Large two-photon absorption coefficients were obtained. Taking advantage of the large two-photon absorption, we have demonstrated two-photon confocal imaging of a GaN thin film. Direct correlation was found between the yellow luminescence and suppression of bandedge luminescence. © 2000 American Institute of Physics.
Type
journal article