Optically encoded second-harmonic generation in germanosilicate glass via a band-to-band excitation

Authors
Si, JH Kitaoka, K Mitsuyu, T Hirao, K
Citation
Jh. Si et al., Optically encoded second-harmonic generation in germanosilicate glass via a band-to-band excitation, APPL PHYS L, 75(3), 1999, pp. 307-309
Citations number
18
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
00036951 → ACNP
Volume
75
Issue
3
Year of publication
1999
Pages
307 - 309
Database
ISI
SICI code
0003-6951(19990719)75:3<307:OESGIG>2.0.ZU;2-N
Abstract
Optically encoded second-harmonic generation was enhanced by irradiating th e germanosilicate glass with a pump beam of wavelength of 355 nm along with preparation beams at frequencies omega and 2 omega. The origin of this enh ancement was investigated by measuring the absorption spectra before and af ter preparation. The results suggest that the enhancement effect is related to the creation of an electron trapped center (GEC: germanium electron cen ter) via a band-to-band excitation. (C) 1999 American Institute of Physics. [S0003-6951(99)00429-5].