Abstract

Modulated photonic-crystal lasers can control the output beam direction two-dimensionally by exciting a two-dimensional cavity mode at the non-diffractive photonic band-edge and diffracting the mode upwards with position modulation of each air hole. In these lasers, the position modulation can be introduced one-directionally, where the modulation is given by the distances between the air holes, or two-directionally, where the modulation is given by the rotation angles of the air holes. For one-directional position modulation, we show that the polarization of output beams is perpendicular to the direction of modulation. For two-directional position modulation, we show that circularly polarized beams are obtained. As such, these lasers can control not only the beam direction but also the polarization.

© 2019 Optical Society of America

All-optically controlled beam splitting through asymmetric polarization-based holography

Ziyao Lyu, Changshun Wang, Yujia Pan, Renjie Xia, Tianyu Chen, and Lili Sun
Opt. Lett. 44(8) 2129-2132 (2019)

Generation of broadband circularly polarized supercontinuum light in twisted photonic crystal fibers

Rafal P. Sopalla, Gordon K. L. Wong, Nicolas Y. Joly, Michael H. Frosz, Xin Jiang, Goran Ahmed, and Philip St.J. Russell
Opt. Lett. 44(16) 3964-3967 (2019)

Observation of diffraction pattern in two-dimensional optically induced atomic lattice

Jinpeng Yuan, Chaohua Wu, Lirong Wang, Gang Chen, and Suotang Jia
Opt. Lett. 44(17) 4123-4126 (2019)

Extraordinary polarization rotation of vector beams with high-period-number chiral photonic crystals

Chun-Wei Chen and Iam Choon Khoo
Opt. Lett. 44(21) 5306-5309 (2019)

High conversion efficiency second-harmonic beam shaping via amplitude-type nonlinear photonic crystals

Bing Zhu, Haigang Liu, Yuping Chen, and Xianfeng Chen
Opt. Lett. 45(1) 220-223 (2020)