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arXiv 1311.4100physics.optics
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三重谐振纳米梁腔中的高效简并四波混频

High-efficiency degenerate four wave-mixing in triply resonant nanobeam cavities

Zin Lin, Thomas Alcorn, Marko Loncar, Steven G. Johnson, Alejandro W. Rodriguez

摘要:

我们证明了三重共振克尔$χ^(3)$光子晶体(PhC)纳米梁腔中的高效率,简并四波混频。利用时间耦合模理论和非线性时域有限差分(FDTD)模拟相结合的方法,研究了共振四波混频过程的非线性动力学,并证明了在低功率下观察到与泵浦光的$\approx 100$ %耗尽相对应的高效率极限环和稳态转换的可能性,甚至包括由于损耗、自相位调制和交叉相位调制的影响,以及不完美的频率匹配。假设操作在电信范围内,我们预测接近完美的量子效率在合理的低$\sim$ 50毫瓦的输入功率在硅微米级腔。

英文摘要:

We demonstrate high-efficiency, degenerate four-wave mixing in triply resonant Kerr $χ^(3)$ photonic crystal (PhC) nanobeam cavities. Using a combination of temporal coupled mode theory and nonlinear finite-difference time-domain (FDTD) simulations, we study the nonlinear dynamics of resonant four-wave mixing processes and demonstrate the possibility of observing high-efficiency limit cycles and steady-state conversion corresponding to $\approx 100$% depletion of the pump light at low powers, even including effects due to losses, self- and cross-phase modulation, and imperfect frequency matching. Assuming operation in the telecom range, we predict close to perfect quantum efficiencies at reasonably low $\sim$ 50 mW input powers in silicon micrometer-scale cavities.

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