Laguerre–Gaussian Laser-Mode Modulation Using a Coupled Cavity

Author

Chuan-Pi Hsu ; Yu-Heng Wu ; Da-Long Cheng

Author_Institution

Dept. of Phys., Nat. Sun Yat-sen Univ., Kaohsiung, Taiwan

Volume

50

Issue

9

fYear

2014

fDate

Sept. 2014

Firstpage

760

Lastpage

765

Abstract

A detailed experiment was conducted to characterize the stable fundamental-mode operation of a commercial Laguerre-Gaussian (LG)-mode vertical-cavity surface-emitting laser when single-mode-fiber optical feedback was applied. Two steady-state beam profiles of laser output were established and four radial-intensity profiles obtained through simulation were compared with experimental results. The steady high-order mode can be applied in technology featuring a unitary wavelength and multiple connections. An oscillating competition state of the coupled patterns was analyzed; in this state, the laser output between an LG beam and a Gaussian beam was established after optical feedback.

Keywords

laser beams; laser cavity resonators; laser feedback; laser modes; laser stability; optical modulation; surface emitting lasers; Laguerre-Gaussian beam; Laguerre-Gaussian laser-mode modulation; Laguerre-Gaussian-mode vertical-cavity surface-emitting laser; coupled cavity; coupled patterns; laser output; oscillating competition state; radial-intensity profiles; single-mode-fiber optical feedback; stable fundamental-mode operation; steady high-order mode; steady-state beam profiles; unitary wavelength; Cavity resonators; Laser beams; Laser modes; Optical feedback; Optical fibers; Oscillators; Vertical cavity surface emitting lasers; Optical feedback; mode matching methods; optical fiber applications; semiconductor lasers;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.2014.2338321

Filename

6857330