Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9786122 | Optics Communications | 2005 | 6 Pages |
Abstract
Optical-beam induced current (OBIC) is generated in blue light-emitting diode samples (peak emission wavelength = 480 nm) via two-color (two-photon) excitation using the second- (502.9 nm) and third-order (635.9 nm) Stokes beam outputs of a hydrogen Raman shifter that is pumped by the 355 nm pulsed output (5.4 ns pulsewidth) of a 10 Hz Nd:YAG laser. Two-color OBIC generation happens only in sample regions where the two focused Stokes beams overlap in both space and time. We have verified the direct proportionality of the two-color OBIC signal with the product of the individual Stokes beam intensities as well as the localized nature of two-color OBIC generation in the common focal volume of the two confocal excitation beams.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Carlo Amadeo Alonzo, Wilson Garcia, Caesar Saloma,