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摘要

We demonstrate a squeezing experiment exploiting the association of integrated optics and telecom technology as key features for compact, stable, and practical continuous variable quantum optics. In our setup, squeezed light is generated by single-pass spontaneous parametric down conversion on a lithium niobate photonic circuit and detected by a homodyne detector whose interfer

PDF全文 Photonics Research | 2019,7(07):A36-39
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Controlled obtaining of orbital angular momentum (OAM) modes of light at high power over arbitrary orders has important implications for future classical and quantum systems. Appreciable optical amplification has recently been observed for low-order or specific-order OAM modes. However, large amplification of high-order OAM modes still remains challenging. Here we report on fla

PDF全文 Photonics Research | 2019,7(07):748-753
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We investigate optical and electrical behaviors of a graphene saturable absorber (SA) and mode-locking performance of a graphene-SA-based mode-locked Er fiber laser in gamma-ray radiation. When irradiated up to 4.8?kGy at 100

PDF全文 Photonics Research | 2019,7(07):742-747
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Optical absorbers with dynamic tuning features are able to flexibly control the absorption performance, which offers a good platform for realizing optical switching, filtering, modulating, etc. Here, we propose a thermally tunable broadband absorber applying a patterned plasmonic metasurface with thermo-chromic vanadium dioxide (

PDF全文 Photonics Research | 2019,7(07):734-741
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In this study, a point-scattering approach to the plane-wave optical transmission of subwavelength metal nanoslit arrays with varying angles of rotation and that of subwavelength metal supercell arrays consisting of nanoslits capable of various angles of rotation is developed. It is demonstrated that the suggested theories show good agreement with the simulations and experiment

PDF全文 Photonics Research | 2019,7(07):728-733
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微焦点X射线源是微计算机断层扫描技术设备的核心部件。研究了电子束在靶材中的横向扩散引起的透射式微焦点射线源的焦点尺寸和强度的变化规律。结果表明:当打靶电子束的束流密度遵循高斯分布时,其产生的X射线强度也遵循高斯分布,该分布的标准差可以用来精确表示X射线的焦点尺寸;当靶材厚度可以使沉积电子束的能量达到60%时,对应的靶材产生的X射线强度最高;随着靶材厚度增加,X射线的焦点尺寸逐渐变大;增大电子束

PDF全文 HTML全文 光学学报 | 2019,39(06):0634001
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基于自主研制的均匀掺杂低热光系数25/400 μm掺镱双包层光纤,开展了全光纤高功率窄线宽光纤激光放大实验。激光系统实现了中心波长为1060.3 nm、线宽为25 GHz、最高功率为2.2 kW的单模激光输出,其斜率效率达78%,光束质量因子M2≈1.2,其功率是目前报道的基于国产25/400 μm掺镱双包层光纤窄线宽放大器单模激光输出的最高功率。

PDF全文 HTML全文 光学学报 | 2019,39(06):0636001
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We report on the elemental redistribution behavior in oxyfluoride glasses with a high repetition rate near-infrared femtosecond laser. Elemental analysis by an electro-probe microanalyzer demonstrates that the redistributions of Ca2+ and Yb3+ ions change dramatically with pulse energy, which are quite different compared with previous reported results. Conf

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探究径向偏振矢量光与氧化石墨烯/金纳米棒复合结构的相互作用,以提高表面增强拉曼散射性能。基于FDTD Solutions软件,得到氧化石墨烯/单金纳米棒复合基底在径向偏振光激发下的表面增强拉曼散射增强因子达到10 8,比相同条件下线偏振光激发的大6个数量级。这种性能提高的物理机制源于径向偏振光激发金纳米棒的电磁增强与氧化石墨烯产生的本征化学增强。进一步详细讨论了径向偏振光激发下氧

PDF全文 HTML全文 光学学报 | 2019,39(06):0630003
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风云四号A星上搭载的干涉式大气垂直探测仪的核心是一台红外傅里叶光谱仪,为了提高探测仪观测资料的定量化应用水平,必须对其进行精确的在轨光谱定标。对于傅里叶光谱仪来说,光谱位置由干涉图的采样点数和参考激光频率共同决定,因此光谱定标的关键是确保参考激光频率的稳定性。本研究利用逐线积分辐射传输模式得到参考大气吸收谱线,通过比较探测仪观测光谱与参考光谱的均方根误差来确定激光的有效采样频率,从而

PDF全文 HTML全文 光学学报 | 2019,39(06):0630002
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