Doubly forbidden second-harmonic generation from isotropic suspensions: Studies on the purple membrane of Halobacterium halobium

被引：25

作者：

Allcock, P ^{[1
]}

Andrews, DL ^{[1
]}

Meech, SR ^{[1
]}

Wigman, AJ ^{[1
]}

机构：

[1] UNIV E ANGLIA, SCH CHEM SCI, NORWICH NR4 7TJ, NORFOLK, ENGLAND

来源：

PHYSICAL REVIEW A | 1996年 / 53卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.53.2788

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper we report results on second-harmonic generation (SHG) from aqueous suspensions of the purple membrane of Halobacterium halobium. A detailed theory describing this SHG signal is supported by results for the angular distribution of the harmonic emission and validated by experimental measurements with circularly polarized pump radiation-a condition that normally precludes SHG. Hence we identify the precise mechanism for second-harmonic emission in this macroscopically isotropic but microscopically ordered system, resolving confusion over whether the signal should be considered coherent SHG or incoherent hyper-Rayleigh scattering.

引用

页码：2788 / 2791

页数：4

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