Title :
Energy scalable and high beam quality THz-wave parametric oscillator using surface emitted cavity configuration
Author :
Ikari, Tomoftimi ; Minamide, Hiroaki ; Ito, Hiromasa
Author_Institution :
RIKEN Sendai, Sendai
Abstract :
We describe a possibility of the output THz-wave scaling in surface emitted TPO by simply using a larger beam size along with higher pump energy. The output energy was as six times as higher than that of the conventional surface emitted TPO though the input energy and pump beam cross-section area each increased 2.9 times. The efficiency enhancement by increasing a pump beam size was also obtained. The beam quality factors (M2) of THz-wave were also measured to be 1.15 x 1.25.
Keywords :
parametric oscillators; submillimetre wave oscillators; THz efficiency enhancement; THz-wave scaling; beam quality factors; energy scalability; high beam quality THz-wave parametric oscillator; pump beam size; pump energy; surface emitted cavity configuration; Crystals; Energy measurement; Indium tin oxide; Laser excitation; Oscillators; Physics; Pulse amplifiers; Q factor; Size measurement; Surface waves;
Conference_Titel :
Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics, 2006. IRMMW-THz 2006. Joint 31st International Conference on
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0400-2
Electronic_ISBN :
1-4244-0400-2
DOI :
10.1109/ICIMW.2006.368541