Open AccessX-ray pumped Cr,Nd:GSGG laser
Author(s) -
P. J. Bran,
M. A. Hedemann,
Louis S. Weichman
Publication year - 1995
Publication title -
osti oai (u.s. department of energy office of scientific and technical information)
Language(s) - English
Resource type - Reports
DOI - 10.2172/179272
Subject(s) - lasing threshold , laser , materials science , neodymium , x ray laser , optics , excited state , chromium , x ray , ion , optoelectronics , atomic physics , physics , laser power scaling , quantum mechanics , metallurgy
It has been demonstrated that X-rays alone can be used to pump a 1,061 nm Cr,Nd:GSGG laser. Lasing action has been observed when the laser rod absorbs greater than 27 krad of 2 MeV X-rays. The laser cavity consists of a corner cube and a output mirror with a reflectivity of 67%. The X-rays are delivered in a 20 ns pulse, and laser action is observed several {micro}s after the X-ray pulse. This delay suggests that chromium is important in the laser pumping process since it is known that an excited chromium ion takes about 10 {micro}s to transfer its energy to a neodymium ion
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