Title :
Tunable terahertz generation in periodically poled structures using femtosecond laser pulses
Author :
Yu, N.E. ; Kang, C. ; Yoo, H.K. ; Jung, C. ; Lee, Y.L. ; Kee, C.-S. ; Ko, D.-K. ; Kitamura, K. ; Takekawa, Shunji ; Lee, J.
Author_Institution :
Adv. Photonics Res. Inst., GIST, Gwangju
Abstract :
Terahertz generations were demonstrated in periodically poled lithium niobate and lithium tantalate crystals around 1-2 THz. Different forward and backward terahertz radiations are possible in periodically poled structures via difference frequency generation within the ultra-broad pump laser. The generated THz pulses could be controlled by the quasi-phase matching structures.
Keywords :
high-speed optical techniques; lithium compounds; microwave photonics; optical frequency conversion; optical materials; optical phase matching; submillimetre wave generation; LiNbO3; LiTaO3; backward terahertz radiations; difference frequency generation; femtosecond laser pulses; forward terahertz radiations; frequency 1 THz to 2 THz; lithium tantalate crystals; periodically poled lithium niobate; quasiphase matching; tunable terahertz generation; ultrabroad pump laser; Biomedical optical imaging; Frequency; Nonlinear optics; Optical pulse generation; Optical pumping; Optical sensors; Photonic crystals; Temperature; Tunable circuits and devices; Ultrafast optics;
Conference_Titel :
Infrared, Millimeter and Terahertz Waves, 2008. IRMMW-THz 2008. 33rd International Conference on
Conference_Location :
Pasadena, CA
Print_ISBN :
978-1-4244-2119-0
Electronic_ISBN :
978-1-4244-2120-6
DOI :
10.1109/ICIMW.2008.4665679
