Decrease in the uncertainty of laser radiation average power measurement with the aid of discrete Fourier transform

Mark L. Gourari; A. A. Kostin; Anatolyi A. Liberman; V. E. Liandres

doi:10.1117/12.484583

29 July 2002 Decrease in the uncertainty of laser radiation average power measurement with the aid of discrete Fourier transform

Mark L. Gourari, A. A. Kostin, Anatolyi A. Liberman, V. E. Liandres

Author Affiliations +

Proceedings Volume 4900, Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life; (2002) https://doi.org/10.1117/12.484583
Event: Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life, 2002, Novosibirsk, Russian Federation

Abstract

In this paper, a method of increasing the accuracy and sensitivity of optical radiation average power measurements with the aid of a black body (BB) is proposed and studied experimentally. The essence of the method consists in matched Wiener filtration of the results of measuring the kinetics of BB heating up with the aid of the discrete Fourier transform and the method of least squares when the Fourier spectra of the process under study are compared with a model spectrum. The Fourier spectrum of BB heating up at high levels of optical radiation power (when the BB temperature drift can be neglected) is used as the model one. A decrease in the total uncertainty by a factor of 3 to 5 has been attained at low levels of optical radiation power.

Citation Download Citation

Mark L. Gourari, A. A. Kostin, Anatolyi A. Liberman, and V. E. Liandres "Decrease in the uncertainty of laser radiation average power measurement with the aid of discrete Fourier transform", Proc. SPIE 4900, Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life, (29 July 2002); https://doi.org/10.1117/12.484583

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

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.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available