Optical amplification in nematics doped with carbon nanotubes

被引：48

作者：

Lee, W ^{[1
]}

Yeh, SL ^{[1
]}

机构：

[1] Chung Yuan Christian Univ, Dept Phys, Chungli 32023, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2001年 / 79卷 / 27期

关键词：

D O I：

10.1063/1.1430860

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present results on the orientational photorefractive effect in a mesogenic nematic doped with multiwalled carbon nanotubes. Efficient coherent-beam amplification of a signal beam by energy exchange with a pump beam was observed in homogeneous cells of the doped liquid crystal E7 at electric fields of similar to0.5 V/mum. Photorefractive gains as high as 10(3) cm(-1) are achieved in the Raman-Nath regime. It is found that the gain coefficient depends strongly on the externally applied dc voltage, the pump/probe intensity ratio and the total input intensity. (C) 2001 American Institute of Physics.

引用

页码：4488 / 4490

页数：3

共 13 条

[1]

[Anonymous], UNPUB

[2]

Eichler H., 1986, LASER INDUCED DYNAMI

[3] Coherent beam amplification with a photorefractive liquid crystal [J].

Khoo, IC ;

Guenther, BD ;

Wood, MV ;

Chen, P ;

Shih, MY .

OPTICS LETTERS, 1997, 22 (16) :1229-1231

[4] OBSERVATION OF ORIENTATIONAL PHOTOREFRACTIVE EFFECTS IN NEMATIC LIQUID-CRYSTALS [J].

KHOO, IC ;

LI, H ;

LIANG, Y .

OPTICS LETTERS, 1994, 19 (21) :1723-1725

[5] Observation of self-diffraction by gratings in nematic liquid crystals doped with carbon nanotubes [J].

Lee, W ;

Chiu, CS .

OPTICS LETTERS, 2001, 26 (08) :521-523

[6] Photorefractive polymers [J].

Moerner, WE ;

GrunnetJepsen, A ;

Thompson, CL .

ANNUAL REVIEW OF MATERIALS SCIENCE, 1997, 27 :585-623

[7]

Petrov M. P., 1991, PHOTOREFRACTIVE CRYS

[8]

RUDENKO EV, 1994, JETP LETT+, V59, P142

[9]

Saito R., 1998, PHYS PROPERTIES CARB, DOI [10.1016/j.physrep.2004.10.006, DOI 10.1016/J.PHYSREP.2004.10.006]

[10]

SOLYMAR L, 1996, PHYSICS APPL PHOTORE

← 1 2 →