Controlled switching of orbital angular momentum in an optical parametric oscillator

被引:58
|
作者
Aadhi, A. [1 ]
Samanta, G. K. [1 ]
Chaitanya Kumar, S. [2 ]
Ebrahim-Zadeh, M. [2 ,3 ]
机构
[1] Photon Sci Lab, Phys Res Lab, Ahmadabad 380009, Gujarat, India
[2] Barcelona Inst Sci & Technol, ICFO Inst Ciencies Foton, Barcelona 08860, Spain
[3] ICREA, Passeig Lluis Companys 23, Barcelona 08010, Spain
来源
OPTICA | 2017年 / 4卷 / 03期
基金
欧盟地平线“2020”;
关键词
CONTINUOUS-WAVE; SINGLE-FREQUENCY; LIGHT-BEAMS; VORTEX; GENERATION; PHOTONS; SIZE; NM;
D O I
10.1364/OPTICA.4.000349
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Controlled switching of orbital angular momentum (OAM) of light at practical powers over arbitrary wavelength regions can have important implications for future quantum and classical systems. Here we report on a single source of OAM beams based on an optical parametric oscillator (OPO) that can provide all such capabilities. We demonstrate ;active transfer of OAM modes of any order, broken vertical bar l(p)broken vertical bar, of pump to the signal and idler in an OPO, to produce broken vertical bar l(p)broken vertical bar+1 different OAM states by controlling the relative cavity losses of the resonated beams. As a proof-of-principle, we show that when pumping with the OAM states broken vertical bar l(p)broken vertical bar = 1 and broken vertical bar l(p)broken vertical bar = 2 for different relative losses of signal and idler, the OPO has two (broken vertical bar 1,0 broken vertical bar and broken vertical bar 0,1 broken vertical bar) and three (broken vertical bar 2;0 broken vertical bar, broken vertical bar 1;1 broken vertical bar, and broken vertical bar 0;2 broken vertical bar) output states, respectively. Our findings show that using a suitable loss modulator, one can achieve rapid switching of the OAM mode in OPO output beams in time. (C)2017 Optical Society of America
引用
收藏
页码:349 / 355
页数:7
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