Title :
Passive Fraunhofer-wavelength atomic filter at 460.7 nm
Author :
Gelbwachs, Jerry A. ; Chan, Yat C.
Author_Institution :
Aerospace Corp., Los Angeles, CA, USA
fDate :
11/1/1992 12:00:00 AM
Abstract :
A passive Fraunhofer-wavelength atomic filter in the spectral region of minimum seawater attenuation is reported. Signal light at 460.7 nm is strongly absorbed by strontium atoms contained in a heated vapor cell. Collisions with rare gases transfer population into the Sr(5 p3Pj) level, which subsequently emits 689.3-nm photons. Up to 45% photon conversion efficiency was recorded. The strontium filter exhibits a 50-μs decay time and a single noise passband
Keywords :
atomic fluorescence; optical filters; strontium; visible spectra of atoms; 45 percent; 460.7 nm; 50 mus; 689.3 nm; Sr atoms; decay time; fluorescence; heated vapor cell; inert gas collisions; minimum seawater attenuation; optical transmission filter; passive Fraunhofer-wavelength atomic filter; photon conversion efficiency; signal light strong absorption; single noise passband; Atomic beams; Band pass filters; Calcium; Optical attenuators; Optical buffering; Optical filters; Passband; Passive filters; Resonance; Strontium;
Journal_Title :
Quantum Electronics, IEEE Journal of
