Volume 91, Number 2, July 2010
|Number of page(s)||4|
|Published online||04 August 2010|
Terahertz emission from coherent phonons in lithium ternary chalcopyrite crystals illuminated by 1560 nm femtosecond laser pulses
Institute of Laser Engineering, Osaka University - 2-6 Yamadaoka, Suita, Osaka 565-0871, Japan
2 Graduate School of Engineering, Osaka University - 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
Accepted: 13 July 2010
We have investigated terahertz (THz) emission from lithium ternary chalcopyrite crystals LiInSe2, LiGaSe2, LiInS2, and LiGaS2 that were illuminated by 1560 nm femtosecond pump laser pulses. Monocyclic THz emission caused by nonlinear optical effects was initially observed in all the illuminated crystals. Narrow-band THz emission from the coherent phonons were observed in LiInSe2 (2.87 THz) and LiGaSe2 (2.60 and 3.45 THz). These phonon modes were most likely caused by impulsive stimulated Raman scattering.
PACS: 07.57.Pt – Submillimeter wave, microwave and radiowave spectrometers; magnetic resonance spectrometers, auxiliary equipment, and techniques / 42.70.Mp – Nonlinear optical crystals / 63.20.K- – Phonon interactions
© EPLA, 2010
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.