ULTRAWIDE-BAND LIGHT PULSE GENERATOR

WIPO Patent Application WO/2001/020396

A1

A method of generating light pulses in an ultrawide band ranging from near-infrared to near-ultraviolet regions. Fundamental sub-picosecond pulses emitted from ultrashort pulse laser (l) are passed through a nonlinear optical material (6) to produce wavelength-converted pulses whose center wavelength is different from that of the fundamental pulses. The method comprises the steps of separating the converted pulses from the fundamental pulses, delaying the converted pulses relative to the fundamental pulses, adjusting the polarization of the converter or fundamental pulses, adjusting the energy of the fundamental and converted pulses, multiplexing the separated fundamental and converted pulses, and allowing the multiplexed pulses to pass through a nonlinear optical material (22).

KARASAWA NAOKI (JP)
MORITA RYUJI (JP)
YAMASHITA MIKIO (JP)

PCT/JP2000/005813

March 22, 2001

August 29, 2000

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JAPAN SCIENCE & TECH CORP (JP)
KARASAWA NAOKI (JP)
MORITA RYUJI (JP)
YAMASHITA MIKIO (JP)

G02F1/37; G02F1/35; G02F1/365; G02F1/39; H01S3/00; (IPC1-7): G02F1/35; G02F1/39; H01S3/10

EP0409660A2	1991-01-23
JPH0365932A	1991-03-20
JPH0943653A	1997-02-14
JPH1083005A	1998-03-31

TAKAYOSHI KOBAYASHI ET AL.: "Hikari parametric henkan wo mochiita pump probe bunkou you femto byou kou taiiki spectrum kougen", LASER KENKYU, vol. 23, no. 11, November 1995 (1995-11-01), pages 936 - 944, XP002934772
E.T.J. NIBBERING ET AL.: "Generation of tunable 20-fs pulses near 400nm by use of a gas-filled hollow wave guide", OPTICS LETTERS, vol. 22, no. 17, 1 September 1997 (1997-09-01), pages 1335 - 1337, XP002934773

Shimizu, Mamoru (Kanda-Mitoshiro-cho Chiyoda-ku Tokyo, JP)

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