Second-order nonlinear frequency conversion in InGaP-on-insulator waveguides [0.03%]
绝缘层上铟镓磷波导中的二次非线性频率变换
Lucas C Ahler,Emil Z Ulsig,Eric J Stanton et al.
Lucas C Ahler et al.
InGaP integrated on a silicon substrate has emerged as a promising platform for nonlinear and quantum photonics, offering high nonlinear conversion efficiency and scalability with silicon-based fabrication infrastructure. This work presents...
Reference-free mode decomposition of few-mode fibers via coherent modulation imaging [0.03%]
基于相干调制成像的少模光纤参考无关模式分解方法
Chunyu Zou,Suhas P Veetil,Na Rong et al.
Chunyu Zou et al.
A comprehensive understanding of fiber modes is critical for the practical application of few-mode fibers (FMFs) in areas such as telecommunications, high-power lasers, and optical imaging. This paper introduces a single-exposure, reference...
Method for fabricating silica glass aspherical lenses combining layer-by-layer photopolymerization printing with real-time depth testing [0.03%]
结合分层光固化打印与实时深度检测的硅酸盐玻璃非球面镜片成型方法
Shaoqing Zhao,Han Zhang,Long Huang et al.
Shaoqing Zhao et al.
This study proposes a method for real-time in situ testing of the "liquid glass" vertical printing parameters based on light-curing layer-by-layer printing technology. The method involves constructing an optical monitoring system on the sid...
Ibrahim H Abughazaleh,Matthew D Gerard,Panuwat Srisamran et al.
Ibrahim H Abughazaleh et al.
We present an ultrafast thulium fiber laser based on nonlinear pulse compression of a gain-switched laser diode operating at 1.87 µm. Seeded by a 40-ps gain-switched laser diode (GSLD), thulium-doped fiber amplifiers (TDFA) are used to inc...
Yi Wang,Shuna Yang,Bo Yang et al.
Yi Wang et al.
We propose a novel approach, to our knowledge, for implementing photonic real-time Fourier transform (RTFT) based on optical phase conjugation, which enables the spectral content of an input microwave signal to be mapped onto the time-domai...
2.3- μ m deep UV micro-LEDs fabricated by self-aligned selective thermal oxidation process [0.03%]
基于自对准局部热氧化工艺的2.3μm深紫外微发光二极管
Zhiyuan Liu,Haicheng Cao,Tingang Liu et al.
Zhiyuan Liu et al.
Recently, techniques for fabricating micro-sized deep ultraviolet light-emitting diodes (DUV LEDs) have been gaining attention. In this work, we propose a selective thermal oxidation (STO) process to fabricate ultra-small DUV micro-LEDs. An...
Erbium-doped lithium niobate waveguide amplifier enhanced by an inverse-designed on-chip reflector [0.03%]
基于反向设计芯片反射器的掺饵锂钽波导放大器
Zhiwei Wei,Jiangwei Wu,Chengyu Chen et al.
Zhiwei Wei et al.
This study presents a 3.6-cm-long erbium-doped lithium niobate waveguide amplifier enhanced by an inverse-designed on-chip reflector. Integrating a reflector to reflect signal light (1531.6 nm) at the waveguide end yielded an internal net g...
Widely tunable sub-nanosecond microcavity optical parametric oscillator based on cavity phase matching [0.03%]
基于腔内相位匹配的宽调谐亚纳秒微腔光学参数振荡器
Yuxin Liu,Kai Zhong,Fangjie Li et al.
Yuxin Liu et al.
Due to the excessively short pulse width and low repetition rate, sub-nanosecond lasers face inherent challenges in pumping conventional optical parametric oscillators (OPOs) and cannot support synchronous pumping, thereby limiting the deve...
Kerr nonlinear coefficient measurement of low-loss double-stripe silicon nitride waveguides [0.03%]
低损耗双条Strip硅氮化物波导的克尔非线性系数测量
Dharma P Permana,Yvan Klaver,Alexander A Iskandar et al.
Dharma P Permana et al.
Multi-layer Si3N4 waveguides, also known as Triplex waveguide technology, are a very promising waveguide platform for applications in microwave photonics and quantum photonics due to their low loss and compact circuit footprint. However to ...
Frequency calibration method for improved precision and stability of direct laser absorption spectroscopy [0.03%]
改进直接激光吸收光谱精度和稳定性的频率校准方法
Kaiqi Wu,Michael Jakubowsky,Stefan Palzer
Kaiqi Wu
Tunable diode laser absorption spectroscopy is widely used for detecting trace gases, as it combines good selectivity and sensitivity with noninvasive setups and fast response. Among the multiple implementation possibilities, direct absorpt...