Journal
APPLIED PHYSICS LETTERS
Volume 93, Issue 4, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2960999
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Forward and counterpropagated backward terahertz generations were demonstrated via difference frequency generation using a femtosecond laser. By cooling the crystal to reduce terahertz losses, we achieved the terahertz generations of 1.36 and 0.65 THz. Temperature-dependent measurements showed gradual intensity increase of the terahertz pulse and red shift of the center frequency as the temperature decrease from 255 to 143 K, although there were insignificant decreases of the spectral bandwidth. (c) 2008 American Institute of Physics.
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