Frequency-Tunable THz Source Based on Stimulated Polariton Scattering in ${\\rm Mg{:}LiNbO}_{3}$

Author

Lee, Albert ; Yabai He ; Pask, H.

Author_Institution

Dept. of Phys. & Astron., Macquarie Univ., Sydney, NSW, Australia

Volume

49

Issue

3

fYear

2013

fDate

Mar-13

Firstpage

357

Lastpage

364

Abstract

We report a very compact, laser diode end-pumped THz laser source, which utilizes two resonators to generate frequency-tunable radiation across the range 1.53-2.82 THz via stimulated polariton scattering (SPS) in a Mg:LiNbO₃ crystal. To the best of our knowledge, this THz system operates with the lowest pump power threshold (2.4 W), and highest conversion efficiency (6.45ţW average output power at 1.82 THz for 5 W input diode pump power) ever reported for a THz source based on SPS.

Keywords

laser cavity resonators; laser tuning; lithium compounds; magnesium compounds; optical frequency conversion; optical pumping; polaritons; solid lasers; stimulated scattering; submillimetre waves; LiNbO₃:Mg; frequency 1.53 THz to 2.82 THz; frequency tunable radiation across; frequency tunable terahertz source; laser diode end-pumped terahertz laser source; laser resonator; power 5 W; stimulated polariton scattering; Crystals; Frequency measurement; Laser excitation; Mirrors; Optical resonators; Pump lasers; Resonant frequency; Nonlinear frequency conversion; Raman; solid-state laser; stimulated polariton scattering (SPS); terahertz;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.2013.2244850

Filename

6451099