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Conference on Lasers and Electro-Optics

Development of an injection-seeded nanosecond pulsed deep-UV coherent light source for controlling silicon atomic waves

Y. Shiomi, Kuniaki Kyutoku, Hiroshi Kumagai, Ataru Kobayashi

Published Jan 1, 2006• 0 citations
Publisher

Abstract

Output performances of the injection-seeded narrow-linewidth nanosecond pulsed deep-ultraviolet coherent light source we developed here are discussed with the optogalvanic spectroscopy of silicon atoms. The spectroscopy indicates its potentials useful for controlling atomic waves resonantly.
DOI
10.1109/cleo.2006.4627624

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Highly efficient frequency conversions were conducted to obtain a deep-ultraviolet single-mode coherent light using two-stage external cavities. 154-mW power at around 252 nm was obtained with a conversion efficiency of more than 8% by doubly resonant sum-frequency mixing of 373-nm light from the first-stage conversion and 780-nm light from a single-mode Ti:sapphire laser. The output performances of the deep-ultraviolet light source are sufficient for realizing the laser cooling of neutral silicon atoms and then their manipulation with an atomic mirror.
Laser cooling techniques of silicon may be a powerful tool to create a new silicon road map. In the first step, to realize the laser cooling of neutral silicon atoms highly efficient frequency conversions are conducted to obtain a deep-ultraviolet single-mode coherent light using two-stage external cavities. The 154-mW power at around 252 nm is obtained with a conversion efficiency of more than 8% by doubly resonant sum-frequency mixing of 373-nm light from the first-stage conversion and 780-nm light from a single-mode Ti:sapphire laser. This paper reviews a series of challenges for taking possession of the spatial design of nuclear spins of the family of stable isotopes with laser cooling of silicon.
Fourier-limited and tunable nanosecond pulses are essential for applications that rely on high-intensity interactions between light and atoms. These applications require precise and wide tunability across a large range of wavelengths (expanding from the UV to the near-IR). The vast interest in producing and integrating pulsed tunable narrow linewidth light is further fuelled by applications in quantum technology. The main challenge here is in the production of many (hundreds to thousands) individually tunable, narrow-band pulses simultaneously. Photonic integrated circuits (PICs) are expected to provide the scalability and simplicity required for these quantum technology-based sensing systems and applications, but there are still many obstacles to overcome. Among these are improvements in active materials, such as direct gain and laser output in the green-yellow spectral range.