Absolute instrument spectral response measurements using angle-resolved parametric fluorescence.
The broadband parametric fluorescence from a nonlinear crystal can be used as a compact primary source instead of a blackbody for absolute measurements of instrument spectral efficiency. We describe such a setup for measuring the instrument spectral response function in the wavelength range from 450 to 1000 nm. We perform angle-resolved imaging spectroscopy of conical parametric fluorescence in a beta-barium borate crystal pumped by a 405-nm diode laser. The experimental angle-resolved spectra and the generation efficiency of parametric down-conversion agree with a plane-wave theoretical analysis.
Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
Feng-Kuo
FK
Hsu
Chih-Wei
CW
Lai
D000465:Algorithms; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008029:Lighting / Q000295:instrumentation* / Q000379:methods*; D013050:Spectrometry, Fluorescence / Q000295:instrumentation* / Q000379:methods*