KEYWORDS: High power lasers, Laser energy, Resistance, Backscatter, Temperature metrology, Laser energy measurements, Spherical lenses, Calibration, Laser development, Temperature sensors
A new kind of absolute absorbing high-power laser energy meter is reported in this paper. The energy meter has the
advantage of simpleness, high damage threshold and high precision. The measurement principle, material and the
structure of the energy meter is introduced in the paper. Many different kinds of effectors affect the high-power laser
energy measurement results, these factors including backscatter, heat loss and accuracy of temperature measurement etc.
The paper analyzes all these effectors on the measurement results and the consponding compensating models is given to
enhance the measurement results. Energy meter measurement uncertainty is given in the end.
Digital Foucault tester for quantitative estimate the wave form of aspheric surfaces is based on the high precision
knife position determination and the image data processing methods. In this paper, we report a set of digital Foucault
tester for the measurement of parabolic surface. The movement of the knife-edge is controlled by PC, and the
shadow patterns are captured by a CCD in real time and then are fed back to the computer. A new kind of data
processing method, which has the advantage of simple arithmetic and high precision, is given in the paper. The
method offers a reliable base for Digital Foucault tester.
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.