ANOMALOUS PHOTORESPONSE OF THICK BISMUTH-FILMS TO PULSED-LASER EXCITATION

Authors
DESANDE JCG BALMASEDA MS PEREZ JMG
Citation
Jcg. Desande et al., ANOMALOUS PHOTORESPONSE OF THICK BISMUTH-FILMS TO PULSED-LASER EXCITATION, Applied physics letters, 64(26), 1994, pp. 3658-3660
Citations number
17
Categorie Soggetti
Physics, Applied
Journal title
Applied physics letters → ACNP
ISSN journal
00036951
Volume
64
Issue
26
Year of publication
1994
Pages
3658 - 3660
Database
ISI
SICI code
0003-6951(1994)64:26<3658:APOTBT>2.0.ZU;2-W
Abstract
Current-biased 4.3-mum Bi films give an anomalous photoresponse when t hey are illuminated with 20-ns 1.064-mum laser pulses. The films resis tivity decreases during irradiation. This observation excludes a simpl e bolometric process as a cause for the induced transients and support s the prediction of a previously reported model which required the opt ical pumping of carriers into a metastable band.