Coherent optical pulse reshaping in a resonant molecular absorber

The coherent reshaping of short-duration (2–40 nsec) N2O laser pulses in a resonant NH3 absorber is studied for a variable number of absorption lengths (αl ≤ 14). For small-area square pulses, the reshaping can produce subnanosecond pulses at the leading and trailing edges. A rapid phase reversal gi...

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Bibliographic Details
Published in:Applied physics letters 1974-08, Vol.25 (3), p.160-163
Main Authors: Hamadani, S. M., Goldhar, J., Kurnit, N. A., Javan, A.
Format: Article
Language:English
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Summary:The coherent reshaping of short-duration (2–40 nsec) N2O laser pulses in a resonant NH3 absorber is studied for a variable number of absorption lengths (αl ≤ 14). For small-area square pulses, the reshaping can produce subnanosecond pulses at the leading and trailing edges. A rapid phase reversal gives rise to amplification for times comparable to the transverse relaxation time. Zero-degree pulses [∫−∞∞E(z,t) d t=0] are observed to propagate with enhanced transmission for both short-duration low-intensity pulses and longer pulses of intensity sufficient to enable observation of optical nutation effects.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1655422