Julia M Mikhailova,Aleksei M Zheltikov
Julia M Mikhailova
Ultrafast laser writing of single lattice defects in wide-bandgap semiconductors is shown to present a new, to the best of our knowledge, physical setting in which deeply subwavelength laser-writing positioning precision is attainable but w...
Generation of 3.3-mJ, 2.45-µm, sub-2-cycle laser pulses via hollow-core fiber pulse compression [0.03%]
基于空芯光纤的皮秒脉冲压缩及中红外深紫外飞秒脉冲产生研究
Mathew Britton,Huanyu Song,Chelsea Kincaid et al.
Mathew Britton et al.
We demonstrate nonlinear compression of mid-infrared pulses from a Cr:ZnSe chirped-pulse amplifier using a gas-filled stretched hollow-core fiber followed by bulk-material compression. Starting from 90 fs, 2.45 µm pulses with 5.3 mJ energy...
Toroidal dipole excitation of quasi-BIC and EIT: decoupled control through spatial displacement [0.03%]
准BIC和EIT的环形偶极子激发：通过空间分离实现解耦控制
Xiaodong Wu,Jiahao Tian,Kun Yu et al.
Xiaodong Wu et al.
Conventional geometric symmetry breaking for exciting quasi-bound states in the continuum (BICs) often induces spectral drift. Here, we propose an all-dielectric dimer metasurface that achieves orthogonal, decoupled control of quasi-BIC and...
Alex Mavian,Russell Berger,Viet Tran et al.
Alex Mavian et al.
Two-dimensional transition metal dichalcogenides are promising candidates for nonlinear photonics applications, offering strong nonlinear susceptibility and compatibility with integrated platforms. Although considerable effort has been devo...
Low threshold two-photon-pumped amplified spontaneous emission in thermally nanoimprinted MAPb0.2Sn0.8I3 thin films [0.03%]
热纳米压印的二维钙钛矿MAPb0.2Sn0.8I3薄膜中的低阈值双光子泵浦自发辐射放大研究
Feng Cui,Yu He,Hongling Cai et al.
Feng Cui et al.
Two-photon pumped lasers are pivotal for upconversion devices and nonlinear photonics, yet the realization of stable, high-gain media remains a significant challenge. Here, a thermal nanoimprint strategy to optimize MAPb0.2Sn0.8I3 perovskit...
S-band thulium-doped fluorotellurite fiber amplifier with an output power of ∼31 dBm and a noise figure of ∼4.94 dB at 1490 nm [0.03%]
工作波长为1490nm的硫代氟碲玻璃放大器输出功率高达31dBm及噪声系数仅为4.94dB的S波段掺铥光纤放大器
Fangning Wang,Zhixu Jia,Songshan He et al.
Fangning Wang et al.
We demonstrate an S-band thulium-doped fiber amplifier (TDFA) with an output power of ∼31 dBm and a noise figure (NF) of ∼4.94 dB at 1490 nm. The amplifier has a dual-stage configuration, in which homemade thulium-doped fluorotellurite fi...
Compact polarization-entangled source near 810 nm and its application to nonlocal retardance measurement [0.03%]
一种用于局域延进建模的810纳米附近的紧凑型偏振纠缠光源及其应用
Shani Izhak,Inbar Hurvitz,Hagai S Eisenberg et al.
Shani Izhak et al.
We present direct single-pass generation of polarization-entangled photon pairs near 810 nm in a domain-engineered nonlinear crystal pumped by a continuous-wave 405 nm laser. Despite operating outside the natural group-velocity matching reg...
Xingjian Liu,Zhengmao Feng,Haokai Li et al.
Xingjian Liu et al.
Perceiving non-Lambertian surfaces with specular reflection is challenging. Event cameras, with high dynamic range, temporal resolution, and low data redundancy, offer a promising 3D sensing tool, but specular reflections still produce dens...
Yohann G Sanvert,Jules Mercadier,Stefan Bittner et al.
Yohann G Sanvert et al.
The nonlinear dynamics of transverse and polarization modes of a broad-area vertical-cavity surface-emitting laser (BA-VCSEL) exhibit, without any external perturbation, chaos with high correlation dimension, large bandwidth (BW), and good ...
Femtosecond laser inscription of fiber Bragg gratings in lutetium oxide (Lu2O3) single-crystal optical fiber for ultra-high-temperature sensing [0.03%]
基于镥氧化物单晶光纤飞秒激光直写的布拉格光栅用于超高温传感
Farhan Mumtaz,Ruimin Jie,Muhammad Subhan Bin Farhan et al.
Farhan Mumtaz et al.
Lutetium oxide (Lu2O3) single-crystal fibers represent a promising platform for extreme-environment optics, offering an exceptionally high melting point (~2450 °C) and a cubic crystal structure that avoids polarization-dependent effects as...