We describe what is to our knowledge the first experimental demonstration of internal wavelength conversion in the metastable Mg atomic filter. The filter operates at a Fraunhofer line, thereby offering intrinsic solar background rejection. Incoming green Fraunhofer photons (518 nm) are absorbed by metastable Mg atoms in an oven cell and are converted into UV (384-nm) photons. We observed a green-to-UV conversion efficiency of greater than 50%.
© 1989 Optical Society of America
Original Manuscript: January 6, 1989
Manuscript Accepted: April 11, 1989
Published: July 15, 1989
Y. C. Chan, M. D. Tabat, and J. A. Gelbwachs, "Experimental demonstration of internal wavelength conversion in the magnesium atomic filter," Opt. Lett. 14, 722-724 (1989)