Thermally driven continuous-wave and pulsed optical vortex

被引：21

作者：

Ding, Yitian ^{[1
,2
,3
]}

Xu, Miaomiao ^{[1
,2
,4
]}

Zhao, Yongguang ^{[1
,2
]}

Yu, Haohai ^{[1
,2
]}

Zhang, Huaijin ^{[1
,2
]}

Wang, Zhengping ^{[1
,2
]}

Wang, Jiyang ^{[1
,2
]}

机构：

[1] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China

[2] Shandong Univ, Inst Crystal Mat, Jinan 250100, Peoples R China

[3] Shandong Univ, Dept Phys, Jinan 250100, Peoples R China

[4] Shandong Univ, Taishan Coll, Jinan 250100, Peoples R China

来源：

OPTICS LETTERS | 2014年 / 39卷 / 08期

基金：

中国国家自然科学基金;

关键词：

ORBITAL ANGULAR-MOMENTUM; LAGUERRE-GAUSSIAN MODES; END-PUMPED LASERS; PROPAGATION DYNAMICS; CRYSTAL NDLYSO; GENERATION; LIGHT; VORTICES; PATTERNS; BEAMS;

D O I：

10.1364/OL.39.002366

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrated a continuous-wave (cw) and pulsed optical vortex with topological charges driven by heat generated during the lasing process without introducing the astigmatism effect and reducing lasing efficiency. During the lasing process, the topological charges were changeable by the thermal-induced lens and selected by the mode-matching between the pump and oscillating beams. With a graphene sample as the saturable absorber, a pulsed optical vortex was achieved at a wavelength of 1.36 mu m, which identified that graphene could be used as a pulse modulator for the generation of a pulsed optical vortex. Thermally driven cw and pulsed optical vortexes should have various promising applications based on the compact structure, changeable topological charges, and specific wavelength. (C) 2014 Optical Society of America

引用

页码：2366 / 2369

页数：4

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