High brightness, tunable biphoton source at 976 nm for quantum spectroscopy

作者：Jechow Andreas^*; Heuer Axel; Menzel Ralf

来源：Optics Express, 2008, 16(17): 13439-13449.

DOI：10.1364/OE.16.013439

A compact all solid state continuous-wave biphoton source, tunable around 488 nm, for quantum spectroscopic applications based on a frequency doubled diode laser system is presented. Copolarized photon pairs in the fundamental transversal mode could be generated at 976 nm by spontaneous parametric down conversion inside a type-0 quasi phase matched periodically poled lithium niobate waveguide crystal with an efficiency of 8.10(-6). A high flux rate greater than 10(7) photon pairs per second has been achieved at pump powers in the mu W range resulting in more than 7.10(9) photon pairs/s.mW. Further a detailed investigation of the spectral behavior and the flux rate as a function of the detuning from the degenerated case is presented.

• 出版日期2008-8-18