深圳大学学报（理工版）2007，Vol.24Issue(2)：149-153,5.
光子晶体光纤产生超连续谱的相干性研究
Analysis on the coherence properties of supercontinuum spectra generated in a photonic crystal fiber
摘要
Abstract
Coherence properties of supercontinuum (SC) spectra with a bandwidth of about 500 nm were experimentally studied by using Michelson interferometer whose temporal resolution was up to femtosecond level.Degree of coherence of supercontinuum was measured to be 0.77 which indicated that good spatial coherence property was achieved due to the small emitting area of the polarization maintaining photonic crystal fiber (PM-PCF).Under the same experimental condition,coherence length of supercontinuum and pump light were measured to be 3.71 μm and 62.24 μm,respectively.It was shown that the coherence length of supercontinuum was much shortened which was of advantage to improve the longitudinal resolution of optical coherence tomography (OCT).Pulse sequences of supercontinuum with different wavelength range were observed which had the same repetition rate with the pump laser.关键词
超连续谱/光子晶体光纤/时间相干性/空间相干性/迈克尔逊干涉仪Key words
supercontinuum/photonic crystal fiber/temporal coherence property/spatial coherence property/Michelson interferometer分类
信息技术与安全科学引用本文复制引用
郭媛,阮双琛,于永芹,王云才..光子晶体光纤产生超连续谱的相干性研究[J].深圳大学学报（理工版）,2007,24(2):149-153,5.基金项目
深圳大学科研启动基金资助项目(200507) （200507）
