Laser detection using liquid crystal polarization modulators

被引：0

作者：

Benton, David M. ^{[1
]}

机构：

[1] Aston Univ, Aston Inst Photon Technol, Birmingham, W Midlands, England

来源：

OPTICAL ENGINEERING | 2020年 / 59卷 / 06期

关键词：

laser detection; interferometry; liquid crystal;

D O I：

10.1117/1.OE.59.6.064106

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Lasers can be identified by their relatively long coherence lengths using interferometry. A Mach-Zehnder interferometer incorporating liquid crystal polarization modulators is demonstrated as a means of low-cost, robust laser detection. Temporal modulations, as a signature of coherence, can be induced by modulating polarization changes in liquid crystal modulators using low voltages. Sensitivities of < 10 nW can be achieved. The suitability as a means of laser detection is discussed. (C) 2020 Society of Photo-Optical Instrumentation Engineers (SPIE)

引用

页数：9

共 20 条

[1]

Benton D. M., 2019, P SOC PHOTO-OPT INS

[2] Low-cost detection of lasers [J].

Benton, David M. .

OPTICAL ENGINEERING, 2017, 56 (11)

[3]

Chen S., 2020, ALIEN LIGHT

[4] ELECTROOPTIC DETECTOR OF TEMPORALLY COHERENT RADIATION [J].

COHEN, JD .

APPLIED OPTICS, 1991, 30 (07) :874-883

[5]

Coutinho R. C., 1999, 1999 IEEE LEOS Annual Meeting Conference Proceedings. LEOS'99. 12th Annual Meeting. IEEE Lasers and Electro-Optics Society 1999 Annual Meeting (Cat. No.99CH37009), P247, DOI 10.1109/LEOS.1999.813572

[6]

Crane Jr. R., 1979, OPTICAL ENG, V18

[7]

Crane Jr R., 1979, OPT ENG, V18

[8]

Dabrowski M., 2006, P SOC PHOTO-OPT INS, V6598

[9] Detecting laser sources on the battlefield - art. no. 67962F [J].

Dubois, J. ;

Reid, F. .

PHOTONICS NORTH 2007, PTS 1 AND 2, 2007, 6796 :F7962-F7962

[10] An imaging system based on temporal coherence differences [J].

Duffy, C. J. ;

Hickman, D. .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1988, 21 (10) :S56-S58

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