Blue/Violet Light Generation by Ultrashort Pulse Injection into Photonic Crystal Fibers

Masashi NAKAO  Kenta MATSUI  Ikutaro KOBAYASHI  Mitsuru NAGANUMA  Masayuki IZUTSU  

IEICE TRANSACTIONS on Electronics   Vol.E90-C   No.1   pp.120-126
Publication Date: 2007/01/01
Online ISSN: 1745-1353
DOI: 10.1093/ietele/e90-c.1.120
Print ISSN: 0916-8516
Type of Manuscript: INVITED PAPER (Special Section on Microoptomechatronics)
photonic crystal fibers,  supercontinuum,  nonsolitonic radiation,  energy conversion,  nonlinearity,  

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In this paper, we describe detailed experimental demonstrations of blue/violet light generation by the injection of ultrashort optical pulses into photonic crystal fibers (PCFs). Two lightwaves appear one on each side of the injected pulses in the spectral domain. They simultaneously evolve in the PCFs, changing their center wavelengths so as to spectrally stand apart from each other. Such behaviors are explained on the basis of the theory of nonlinear optics. The final center-wavelength difference between the two lightwaves at the end of the PCFs, depending on the power density of the injected pulse, is increased up to a limit imposed by the PCFs. Owing to this increase, the shorter wavelength limit reaches approximately 400 nm, which shows that short-pulse injection in PCFs is a promising method of realizing simple blue/violet light sources.