Femtosecond degenerate four-wave-mixing in ZnO microcrystallite thin films

Authors
Zhang, WL Wang, QY Chai, L Xing, QR Wong, KS Wang, H Tang, ZK Wong, GKL Jain, R
Citation
Wl. Zhang et al., Femtosecond degenerate four-wave-mixing in ZnO microcrystallite thin films, CHIN PHYS L, 16(6), 1999, pp. 418-419
Citations number
10
Categorie Soggetti
Physics
Journal title
CHINESE PHYSICS LETTERS
ISSN journal
0256307X → ACNP
Volume
16
Issue
6
Year of publication
1999
Pages
418 - 419
Database
ISI
SICI code
0256-307X(1999)16:6<418:FDFIZM>2.0.ZU;2-P
Abstract
Transient third-order optical nonlinearity chi((3)) Of ZnO microcrystallite thin films is measured at various temperatures by using femtosecond degene rate four-wave-mixing. Room-temperature excitonic enhancement of chi((3)) i s observed. The magnitude of chi((3)) ranges between 10(-4) to 10(-6) esu f rom 4.2 K to room temperature, The measured chi(3) response time ranging fr om 200 to 300 fs is ultrafast for temperature down to 4.2 K.