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Photothermal Deflection Mapping of Variations in the Optical Absorption in IR Windows

✍ Scribed by Remes, Z. ;Nesl�dek, M. ;Meykens, K. ;Pickles, C.S.J. ;Sussman, R.S.

Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 315 KB
Volume: 181
Category: Article
ISSN: 0031-8965
DOI: 10.1002/1521-396x(200009)181:1<115::aid-pssa115>3.0.co;2-7

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✦ Synopsis

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 CO 2 laser wavelength (10.6 mm). This technique is sensitive to inhomogeneous absorption. The variations in PTD signal, present even in single crystal IIa diamond, agree with the interference patterns of both pump and probe laser beams. The interference pattern is discussed in detail.

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