Showing papers by "Vivek Venkataraman published in 2008"
TL;DR: The ability to generate extremely large rubidium densities in uncoated hollow-core photonic band-gap fibers using light-induced atomic desorption is demonstrated using a relatively easy-to-use fiber-based vapor cell capable of producing large optical depths without the need for thermal tuning.
Abstract: We demonstrate the ability to generate extremely large rubidium densities in uncoated hollow-core photonic band-gap fibers using light induced atomic desorption. Once the fiber is exposed to Rb vapor for 1-2 weeks, and this atomic source is removed, the fiber yields large desorbable densities for an extended period of time. We show that optical depths greater than e-1200 can be created within seconds. Our observed Rb densities are several orders of magnitude larger than any previously reported to be generated optically, and allow for the demonstration of a relatively easy-to-use fiber-based vapor cell capable of producing large optical depths without the need for thermal tuning.
63 citations
Proceedings Article•
04 May 2008TL;DR: This work demonstrates extremely efficient four-wave mixing with gains greater than 100 at microwatt pump powers and signal-to-idler conversion of 50% in Rb vapor confined to a hollow-core photonic band-gap fiber and presents a theoretical model that demonstrates such efficiency is consistent with the dimensions of the fiber and the optical depths attained.
Abstract: We demonstrate extremely efficient four-wave mixing with gains as high as 6 at microwatt pump powers in Rb vapor confined to a hollow-core photonic bandgap fiber.
59 citations
TL;DR: In this article, the authors demonstrate extremely efficient four-wave mixing with gain >100 and frequency conversion efficiency as high as 58% at microwatt pump powers in Rb vapor confined to a hollow-core photonic bandgap fiber.
Abstract: We demonstrate extremely efficient four-wave mixing with gain >100 and frequency conversion efficiency as high as 58% at microwatt pump powers in Rb vapor confined to a hollow-core photonic bandgap fiber.
4 citations
04 May 2008
TL;DR: In this article, a highly controlled, optically dense, and repeatable Rb vapor inside of a hollow-core photonic bandgap fiber using light-induced atomic desorption was generated.
Abstract: We generate a highly-controlled, optically-dense, and repeatable Rb vapor inside of a hollow-core photonic bandgap fiber using light-induced atomic desorption. Here we present its generation dynamics and use for nonlinear quantum optical applications.
2 citations