Tunable orbital angular momentum mode filter based on optical geometric transformation

被引：28

作者：

Huang, Hao ^{[1
]}

Ren, Yongxiong ^{[1
]}

Xie, Guodong ^{[1
]}

Yan, Yan ^{[1
]}

Yue, Yang ^{[1
]}

Ahmed, Nisar ^{[1
]}

Lavery, Martin P. J. ^{[2
]}

Padgett, Miles J. ^{[2
]}

Dolinar, Sam ^{[3
]}

Tur, Moshe ^{[4
]}

Willner, Alan E. ^{[1
]}

机构：

[1] Univ So Calif, Dept Elect Engn, Los Angeles, CA 90089 USA

[2] Univ Glasgow, SUPA, Sch Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland

[3] Jet Prop Lab, Pasadena, CA 91109 USA

[4] Tel Aviv Univ, Sch Elect Engn, IL-69978 Tel Aviv, Israel

来源：

OPTICS LETTERS | 2014年 / 39卷 / 06期

关键词：

LIGHT; SCALE;

D O I：

10.1364/OL.39.001689

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a tunable mode filter for spatially multiplexed laser beams carrying orbital angular momentum (OAM). The filter comprises an optical geometric transformation-based OAM mode sorter and a spatial light modulator (SLM). The programmable SLM can selectively control the passing/blocking of each input OAM beam. We experimentally demonstrate tunable filtering of one or multiple OAM modes from four multiplexed input OAM modes with vortex charge of l = -9, -4, +4, and +9. The measured output power suppression ratio of the propagated modes to the blocked modes exceeds 14.5 dB. (C) 2014 Optical Society of America

引用

页码：1689 / 1692

页数：4

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