Frequency translation via four-wave mixing Bragg scattering in Rb filled photonic band-gap fibers

Prathamesh S. Donvalkar, Vivek Venkataraman, Stéphane Clemmen, Kasturi Saha, Alexander L. Gaeta

Published Jan 1, 2014• 0 citations

Abstract

We demonstrate frequency translation of a weak signal beam with 21% efficiency in Rb vapor confined to a hollow core photonic band-gap fiber via Bragg scattering by four-wave mixing using microwatt level pump beams.

DOI: 10.1364/cleo_qels.2014.fth3b.4

Related papers

Frequency translation via four-wave mixing Bragg scattering in Rb filled photonic bandgap fibers

Prathamesh S. Donvalkar, Vivek Venkataraman, Stéphane Clemmen +2 more

We demonstrate frequency translation at microwatt pump power levels in Rubidium vapor confined to a hollow-core photonic bandgap fiber using four-wave mixing Bragg scattering. The 5S(1/2)→5D(3/2) two-photon transition in 85Rb is employed for the four-wave mixing process. Using continuous-wave pump beams at 780 and 795 nm, a weak signal beam at 776 nm is translated to a wavelength of 762 nm with a 21% conversion efficiency at pump powers of 300 μW.

Optics LettersMar 11, 201423 citations

Ultralow-Power Four-Wave Mixing with Rb in a Hollow-Core Photonic Band-Gap Fiber

Pablo Londero, Vivek Venkataraman, Amar R. Bhagwat +2 more

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.

Quantum Electronics and Laser Science ConferenceMay 4, 20080 citations

Ultralow-Power Four-Wave Mixing with Rb in a Hollow-Core Photonic Bandgap Fiber

Vivek Venkataraman, Pablo Londero, Amar R. Bhagwat +2 more

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.

Frontiers in OpticsJan 1, 20085 citations

All-Optical Modulation of Four Wave Mixing in a Rb-Filled Hollow-Core Photonic Band-Gap Fiber

Pablo Londero, Vivek Venkataraman, Amar R. Bhagwat +2 more

We demonstrate efficient modulation of four-wave mixing in a Rb-waveguide system via application of a weak “switching” field. We observe 3 dB attenuation of the signal field with only 3600 photons of “switching” energy.

Conference on Lasers and Electro-OpticsJan 1, 20090 citations

Ultralow-Power Four-Wave Mixing with Rb in a Hollow-Core Photonic Band-Gap Fiber

Pablo Londero, Vivek Venkataraman, Amar R. Bhagwat +2 more

We demonstrate 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. We present a theoretical model that demonstrates such efficiency is consistent with the dimensions of the fiber and the optical depths attained. This is, to our knowledge, the largest four-wave mixing gain observed at such low total pump powers and the first demonstrated example of four-wave mixing in an alkali-metal vapor system with a large (approximately 30 MHz) ground state decoherence rate.

Physical Review LettersJul 23, 200966 citations

All-optical modulation of four-wave mixing in an Rb-filled photonic bandgap fiber

Vivek Venkataraman, Pablo Londero, Amar R. Bhagwat +2 more

We demonstrate efficient all-optical modulation using Rb vapor confined to a hollow-core photonic bandgap fiber. The intensity of a signal field participating in the four-wave-mixing process is modulated using a weak switching field. We observe 3 dB of attenuation in the signal field with only 3600 photons of switching energy, corresponding to 23 photons per atomic cross section lambda(2)/(2pi). Modulation bandwidths as high as 300 MHz are observed.

Optics LettersJun 30, 201018 citations