TY - JOUR
T1 - Ultrahigh and persistent optical depths of cesium in Kagomé-type hollow-core photonic crystal fibers
AU - Kaczmarek, Krzysztof T.
AU - Saunders, Dylan J.
AU - Sprague, Michael R.
AU - Kolthammer, W. Steven
AU - Feizpour, Amir
AU - Ledingham, Patrick M.
AU - Brecht, Benjamin
AU - Poem, Eilon
AU - Walmsley, Ian A.
AU - Nunn, Joshua
PY - 2015/12/1
Y1 - 2015/12/1
N2 - Alkali-filled hollow-core fibers are a promising medium for investigating light-matter interactions, especially at the singlephoton level, due to the tight confinement of light and high optical depths achievable by light-induced atomic desorption (LIAD). However, until now these large optical depths could only be generated for seconds, at most once per day, severely limiting the practicality of the technology. Here we report the generation of the highest observed transient (> 105 for up to a minute) and highest observed persistent (>2000 for hours) optical depths of alkali vapors in a light-guiding geometry to date, using a cesium-filled Kagomé-type hollow-core photonic crystal fiber (HC-PCF). Our results pave the way to light-matter interaction experiments in confined geometries requiring long operation times and large atomic number densities, such as generation of single-photon-level nonlinearities and development of single photon quantum memories.
AB - Alkali-filled hollow-core fibers are a promising medium for investigating light-matter interactions, especially at the singlephoton level, due to the tight confinement of light and high optical depths achievable by light-induced atomic desorption (LIAD). However, until now these large optical depths could only be generated for seconds, at most once per day, severely limiting the practicality of the technology. Here we report the generation of the highest observed transient (> 105 for up to a minute) and highest observed persistent (>2000 for hours) optical depths of alkali vapors in a light-guiding geometry to date, using a cesium-filled Kagomé-type hollow-core photonic crystal fiber (HC-PCF). Our results pave the way to light-matter interaction experiments in confined geometries requiring long operation times and large atomic number densities, such as generation of single-photon-level nonlinearities and development of single photon quantum memories.
UR - http://www.scopus.com/inward/record.url?scp=84959354350&partnerID=8YFLogxK
UR - https://doi.org/10.1364/OL.40.005582
U2 - 10.1364/OL.40.005582
DO - 10.1364/OL.40.005582
M3 - Article
AN - SCOPUS:84959354350
SN - 0146-9592
VL - 40
SP - 5582
EP - 5585
JO - Optics Letters
JF - Optics Letters
IS - 23
ER -