Four-level atomic coherence and cw VUV lasers

We demonstrate the feasibility of utilizing the so-called `double-dark' scheme of four-level atomic coherence to obtain strong laser gain in the ultra-violet and vacuum ultra-violet. Furthermore, we show a new technique for eliminating Doppler broadening in a large class of multi-level (≥4) sch...

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Bibliographic Details
Published in:Optics communications 2000-05, Vol.179 (1), p.499-504
Main Authors: Fry, Edward S., Lukin, Mikhail D., Walther, Thomas, Welch, George R.
Format: Article
Language:English
Subjects:
Effects of atomic coherence on propagation, absorption and amplification of light
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Lasers
Optics
Physics
Quantum optics
X- and γ-ray lasers
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Summary:We demonstrate the feasibility of utilizing the so-called `double-dark' scheme of four-level atomic coherence to obtain strong laser gain in the ultra-violet and vacuum ultra-violet. Furthermore, we show a new technique for eliminating Doppler broadening in a large class of multi-level (≥4) schemes. A specific application of these ideas to cw lasing at 253 nm and 185 nm in Hg is presented.
ISSN:0030-4018
1873-0310
DOI:10.1016/S0030-4018(99)00731-2