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Title: Long pulse production from short pulses

A method of producing a long output pulse (SA) from a short pump pulse (P), using an elongated amplified fiber (11) having a doped core (12) that provides an amplifying medium for light of one color when driven into an excited state by light of a shorter wavelength and a surrounding cladding 13. A seed beam (S) of the longer wavelength is injected into the core (12) at one end of the fiber (11) and a pump pulse (P) of the shorter wavelength is injected into the cladding (13) at the other end of the fiber (11). The counter-propagating seed beam (S) and pump pulse (P) will produce an amplified output pulse (SA) having a time duration equal to twice the transit time of the pump pulse (P) through the fiber (11) plus the length of the pump pulse (P).
  1. (Livermore, CA)
Issue Date:
OSTI Identifier:
United States of America as represented by United States (Washington, DC) LLNL
Patent Number(s):
US 5335236
Contract Number:
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Country of Publication:
United States
pulse; production; pulses; method; producing; output; pump; elongated; amplified; fiber; 11; doped; core; 12; provides; amplifying; medium; light; color; driven; excited; shorter; wavelength; surrounding; cladding; 13; seed; beam; injected; counter-propagating; produce; time; duration; equal; twice; transit; plus; length; transit time; pump pulse; output pulse; time duration; shorter wavelength; amplified output; amplifying medium; doped core; /372/359/385/