Title :
Low THz absorption of Na3La9B8O27 crystal
Author :
Hou, Bihui ; Zhang, Yun ; Mao, Zongliang ; Peizhen Fu ; Wang, Li ; Han, Shouzhen ; Liu, Fengyan
Author_Institution :
Coll. of Appl. Sci., Beijing Univ., Beijing
Abstract :
THz time-domain spectrum of the Na3La9B8O27(NLBO) crystal had been measured. The absorption spectrum and other optical constants had been gained through Fourier transform. The absorption coefficient alpha(omega) is less than 20/cm from 0.1 to 3.0 THz. With the increasing of the frequency, the refractive index n(omega) and the real of dielectric constant epsiv1(omega) steadily and monotonically increase. The n(omega) changes from 3.55 to 3.78, and the epsiv1(omega) changes from 12.7 to 14.2. The imaginary of dielectric constant epsiv2(omega) is less than 0.1 from 0.5 to 2.0 THz.
Keywords :
Fourier transforms; absorption coefficients; crystals; lanthanum compounds; permittivity; sodium compounds; submillimetre wave spectra; Fourier transform; Na3La9B8O27; absorption coefficient; absorption spectrum; crystal time-domain spectrum; dielectric constant; frequency 0.1 THz to 3.0 THz; optical constants; Crystallization; Dielectric constant; Electromagnetic wave absorption; Frequency conversion; Nonlinear optics; Optical harmonic generation; Optical refraction; Optical variables control; Physics; Reflectivity;
Conference_Titel :
Infrared and Millimeter Waves, 2007 and the 2007 15th International Conference on Terahertz Electronics. IRMMW-THz. Joint 32nd International Conference on
Conference_Location :
Cardiff
Print_ISBN :
978-1-4244-1438-3
DOI :
10.1109/ICIMW.2007.4516618
