Ghosh Saikat, Bhagwat Amar R, Renshaw C Kyle, Goh Shireen, Gaeta Alexander L, Kirby Brian J
School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA.
Phys Rev Lett. 2006 Jul 14;97(2):023603. doi: 10.1103/PhysRevLett.97.023603. Epub 2006 Jul 13.
We show that rubidium vapor can be produced within the core of a photonic band-gap fiber yielding an optical depth in excess of 2,000. Our technique for producing the vapor is based on coating the inner walls of the fiber core with organosilane and using light-induced atomic desorption to release Rb atoms into the core. As an initial demonstration of the potential of this system for supporting ultralow-level nonlinear optical interactions, we perform electromagnetically induced transparency with control-field powers in the nanowatt regime, which represents more than a 1,000-fold reduction from the power required for bulk, focused geometries.
我们证明，在光子带隙光纤的纤芯内可以产生铷蒸汽，其光学深度超过2000。我们产生蒸汽的技术是基于在光纤纤芯内壁涂上有机硅烷，并利用光致原子解吸将铷原子释放到纤芯中。作为该系统支持超低水平非线性光学相互作用潜力的初步演示，我们在纳瓦功率范围内进行了电磁诱导透明实验，这比块状聚焦几何结构所需的功率降低了1000倍以上。
