Photothermal deflection mapping of variations in the optical absorption inIR windows

Authors
Remes, Z Nesladek, M Meykens, K Pickles, CSJ Sussman, RS
Citation
Z. Remes et al., Photothermal deflection mapping of variations in the optical absorption inIR windows, PHYS ST S-A, 181(1), 2000, pp. 115-119
Citations number
6
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH
ISSN journal
00318965 → ACNP
Volume
181
Issue
1
Year of publication
2000
Pages
115 - 119
Database
ISI
SICI code
0031-8965(20000916)181:1<115:PDMOVI>2.0.ZU;2-V
Abstract
We used the photothermal deflection (PTD) technique working in a collinear mode to measure optical PTD maps of polished ZnSe, CVD and natural type IIa diamond optical windows at the CO2 laser wavelength (10.6 mu m). This tech nique is sensitive to inhomogeneous absorption. The variations in PTD signa l, present even in single crystal IIa diamond, agree with the interference patterns of both pump and probe laser beams. The interference pattern is di scussed in detail.