Pulsed photothermal deflection with a top-hat beam excitation

authored by

Bincheng Li, Holger Blaschke, Detlev Ristau

Abstract

A top-hat beam excitation is used in pulsed photothermal deflection (PTD) experiments. Based on the Fresnel diffraction model a theory is developed to describe accurately the PTD amplitude obtained with the top-hat beam excitation. The comparison between the theoretical PTD amplitudes achieved with a Gaussian and a top-hat beam excitation shows that the use of top-hat beam excitation improves the measurement sensitivity of the PTD technique. Good agreement between theoretical calculations and experimental results is obtained.

External Organisation(s)

CAS - Institute of Optics and Electronics
Laser Zentrum Hannover e.V. (LZH)

Type

Article

Journal

Journal of Applied Physics

Volume

100

ISSN

0021-8979

Publication date

07.09.2006

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

Electronic version(s)

https://doi.org/10.1063/1.2337253 (Access: Unknown)