2ND-HARMONIC GENERATION IN AN OPTICAL FIBER BY SELF-WRITTEN CHI(2) GRATING
2ND-HARMONIC GENERATION IN AN OPTICAL FIBER BY SELF-WRITTEN CHI(2) GRATING
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DOI：
10.1049/el:19870239
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发表时间：
1987-03-26
影响因子：
1.1
通讯作者：
PAYNE, DN
中科院分区：
文献类型：
--
作者：
FARRIES, MC;RUSSELL, PSJ;PAYNE, DN
本文从实验和理论两方面研究了光纤中二次谐波的相位匹配产生机理。通过四极极化产生的弱非相位匹配SH信号启动了色心轴向周期性图案的自写入，假设该图案会导致χ(2)光栅的生长。光栅（在相位匹配期间）产生的SH效率为0.5%。该χ(2)光栅的光谱带宽为0.24 nm。
A mechanism for phase-matched generation of second-harmonic (SH) light in an optical fibre has been experimentally and theoretically studied. A weak non-phase-matched SH signal, created via the quadrupole polarisation, initiates the self-writing of an axially periodic pattern of colour centres which is postulated to lead to the growth of a χ(2)grating. The grating (at the phase-match period) gives rise to SH generation at efficiencies of 0.5%. The spectral bandwidth of this χ(2)grating is 0.24 nm.