Investigation of pump-wavelength dependence of terahertz-wave parametric oscillator based on LiNbO3
Sun Bo(孙博)a)†, Liu Jin-Song(刘劲松)a), Li En-Bang(李恩邦)b), and Yao Jian-Quan(姚建铨)a)b)
a Wuhan National Laboratory for Optoelectronics, College of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; b College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China
Abstract This paper investigates the performances of terahertz-wave parametric oscillators (TPOs) based on the LiNbO3 crystal at different pump wavelengths. The calculated results show that TPO characteristics, including the frequency tuning range, the THz-wave gain and the stability of THz-wave output direction based on the Si-prism coupler, can be significantly improved by using a short-wavelength pump. It also demonstrates that a long-wavelength-pump allows the employment of a short TPO cavity due to an enlarged phase-matching angle, that is, an increased angular separation between the pump and oscillated Stokes beams under the THz-wave generation at a specific frequency. The study provides an useful guide and a theoretical basis for the further improvement of TPO systems.
Received: 07 January 2009
Revised: 24 February 2009
Accepted manuscript online:
Fund: Project
supported in part by the Foundation for Innovative Research of Wuhan
National Laboratory for Optoelectronics and the National Basic
Research
Program of China (Grant No 2007CB310403).
Cite this article:
Sun Bo(孙博), Liu Jin-Song(刘劲松), Li En-Bang(李恩邦), and Yao Jian-Quan(姚建铨) Investigation of pump-wavelength dependence of terahertz-wave parametric oscillator based on LiNbO3 2009 Chin. Phys. B 18 2846
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
