科研之友
微信
新浪微博
Facebook
分享链接
摘要
Brillouin dynamic gratings have applications ranging from sensing to slow and stored light. When transform-limited pump pulses are used, the grating strength and the efficiency of light storage and retrieval are a periodic function of pulse area and can be zero for areas that are an integer multiple of pi. In this paper the dependence of the dynamic grating strength and retrieval efficiency on pulse area is investigated for chirped pulses. It is found that the presence of chirp relaxes the requirement imposed on the pulse area that it be an odd multiple of pi/2 for maximum efficiency. Analytical results are presented for the dependence of grating strength on the pulse area for both chirped and unchirped pulses. A comparison is made with the analogous process of adiabatic rapid passage in two-level atomic systems.
- 出版日期2015-12-1
