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arXiv quant-ph/0209077quant-ph
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通过光的玻色凝聚的频率下转换

Frequency down conversion through Bose condensation of light

Patrick Navez

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4 pages, 1 figures
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摘要：

我们提出了一种实验装置，允许将波长约为$1-2 μm$的输入光转换成较低频率的输出光。其基本工作原理依赖于玻璃微腔的非线性光学特性。这种材料内部的光表现得像一种2D相互作用的玻色气体，容易受热化并产生准冷凝。将这种设置扩展到光子带隙材料（光纤光栅）允许光表现得像3D玻色气体，在热处理后，导致玻色冷凝物的形成。理论估计表明，$1 μm$到$1.5 μm$的转换是通过使用包含尺寸约为$500 μm \times 100 μm^2$的集成腔的光纤光栅来实现的，其中输入脉冲约为$1 ns$，峰值功率为$10^3 W$。

英文摘要：

We propose an experimental set up allowing to convert an input light of wavelengths about $1-2 μm$ into an output light of a lower frequency. The basic principle of operating relies on the nonlinear optical properties exhibited by a microcavity filled with glass. The light inside this material behaves like a 2D interacting Bose gas susceptible to thermalise and create a quasi-condensate. Extension of this setup to a photonic bandgap material (fiber grating) allows the light to behave like a 3D Bose gas leading, after thermalisation, to the formation of a Bose condensate. Theoretical estimations show that a conversion of $1 μm$ into $1.5 μm$ is achieved with an input pulse of about $1 ns$ with a peak power of $10^3 W$, using a fiber grating containing an integrated cavity of size about $500 μm \times 100 μm^2$.

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