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Title: Long pulse production from short pulses

A method of producing a long output pulse from a short pump pulse is disclosed, using an elongated amplified fiber having a doped core 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. A seed beam of the longer wavelength is injected into the core at one end of the fiber and a pump pulse of the shorter wavelength is injected into the cladding at the other end of the fiber. The counter-propagating seed beam and pump pulse will produce an amplified output pulse having a time duration equal to twice the transit time of the pump pulse through the fiber plus the length of the pump pulse. 3 figs.
Inventors:
Issue Date:
OSTI Identifier:
7163454
Assignee:
Dept. of Energy, Washington, DC (United States) PTO; EDB-94-132725
Patent Number(s):
US 5335236; A
Application Number:
PPN: US 8-070519
Contract Number:
W-7405-ENG-48
Resource Relation:
Patent File Date: 3 Jun 1993
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; LASER RADIATION; BEAM SHAPING; AMPLIFICATION; OPTICAL FIBERS; WAVELENGTHS; ELECTROMAGNETIC RADIATION; FIBERS; RADIATIONS; 426002* - Engineering- Lasers & Masers- (1990-)