It is important for testing the process of crystal growing and crystal quality. This paper built a mathematical model based
on principle of photothermal common-path interferometry, the index change induced in the crystal by the heating pump
beam and the phase distortion of probe beam in the heated area are presented,then obtain the intensity distribution of the
interference in the near filed. Optical geometry of focusing pump beam and intersecting pump and probe beams at waist
position of the pump beam is used. This optical instruction can be adjusted easily and stabilized. Now CRYSTECH have
the largest NLO crystals product line in the world, especially KTP crystals. With absorption measurements in nonlinear
laser crystal KTP as an example to investigate the experimental parameters affecting the photothermal interference signal
and high measuring precision. The analysis of experimental data showed this kind of instruction can reach the
measurement accuracy of 0.1ppm.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.