Intensity modulation characters of orthogonally polarized HeNe lasers with different optical feedback level
Cui Liu(崔柳)†, Zhang Shu-Lian(张书练), and Wan Xin-Jun(万新军)
The State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084, China
Abstract This paper demonstrates the intensity modulation characters of orthogonally polarized HeNe lasers with different optical feedback level generated by the variable reflectivity of external reflector. The modulation depths of the orthogonally polarized frequencies are increased when the optical feedback level becomes strong. It also observes that the modulation amplitudes are different for different external cavity length. Based on the vectorial extension of Lamb's semi-classical theory, it finds that the calculations are consistent with the experimental results.
Received: 01 February 2007
Revised: 04 May 2007
Accepted manuscript online:
(Gas lasers including excimer and metal-vapor lasers)
Fund: Project supported by the State Key
Program of National Natural
Science of China (Grant No 60438010).
Cite this article:
Cui Liu(崔柳), Zhang Shu-Lian(张书练), and Wan Xin-Jun(万新军) Intensity modulation characters of orthogonally polarized HeNe lasers with different optical feedback level 2008 Chin. Phys. B 17 644
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.
