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首页> 外文期刊>Optics Letters >Active holography in InGaAs/InP quantum-well microcavities
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Active holography in InGaAs/InP quantum-well microcavities

机译：InGaAs / InP量子阱微腔中的主动全息

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摘要

High-efficiency dynamic holography at 1.55 μm is demonstrated in a broad-area InGaAs/InP multiple-quantum-well vertical microcavity. The design places single quantum wells at the cavity antinodes, reducing mode-pulling and enabling a higher Q-factor. The device is pumped by interference fringes through an amorphous mirror that is transparent to a high-energy hologram writing pulse at a wavelength of 1.06 μm. Optically pumped free carrier gratings are probed by a tunable 1.5 μm laser in a four-wave mixing configuration. Diffraction efficiency into both m = ±1 diffraction orders of 35% (70% total) has been obtained with a phase grating contribution approaching the maximum π phase shift by combining absorption bleaching with asymmetric Fabry-Perot reflectivity. The diffracted signal exhibits rise/fall times of 5 ns, demonstrating the high speed capabilities of this device.
机译：在广域InGaAs / InP多量子阱垂直微腔中证明了1.55μm的高效动态全息技术。该设计在腔体的波腹处放置了单量子阱，从而减少了模式牵引并提高了Q因子。该器件通过干涉条纹被泵浦通过非晶镜，该非晶镜对于1.06μm波长的高能全息图写入脉冲是透明的。光泵浦的自由载流子光栅由可调的1.5μm激光器以四波混合配置进行探测。通过将吸收褪色与不对称Fabry-Perot反射率相结合，通过接近最大π相移的相光栅贡献，获得了m =±1衍射级的35％的衍射效率（总计70％）。衍射信号的上升/下降时间为5 ns，这表明该设备具有高速功能。

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