Direct comparison of time-resolved Terahertz spectroscopy and Hall Van der Pauw methods for measurement of carrier conductivity and mobility in bulk semiconductors [0.03%]
太赫兹时域光谱法与霍尔范德帕乌方法对本征半导体载流子电导率及迁移率测量的直接对比研究
Brian G Alberding,W Robert Thurber,Edwin J Heilweil
Brian G Alberding
Charge carrier conductivity and mobility for various semiconductor wafers and crystals were measured by ultrafast above bandgap, optically excited Time-Resolved Terahertz Spectroscopy (TRTS) and Hall Van der Pauw contact methods to directly...
Galan Moody,John Schaibley,Xiaodong Xu
Galan Moody
Since the discovery of semiconducting monolayer transition metal dichalcogenides, a variety of experimental and theoretical studies have been carried out seeking to understand the intrinsic exciton population recombination and valley relaxa...
Gas-phase broadband spectroscopy using active sources: progress, status, and applications [0.03%]
利用主动声源开展气相宽带光谱研究：进展、现状及应用
Kevin C Cossel,Eleanor M Waxman,Ian A Finneran et al.
Kevin C Cossel et al.
Broadband spectroscopy is an invaluable tool for measuring multiple gas-phase species simultaneously. In this work we review basic techniques, implementations, and current applications for broadband spectroscopy. We discuss components of br...
Walter Fu,Yuxing Tang,Timothy S McComb et al.
Walter Fu et al.
We explore parabolic pre-shaping as a means of generating and amplifying ultrashort pulses. We develop a theoretical framework for modeling the technique and use its conclusions to design a femtosecond fiber amplifier. Starting from 9 ps pu...
Third-order effects in resonant sum-frequency-generation signals at electrified metal/liquid interfaces [0.03%]
电化学界面三次谐波产生信号研究
Patrick Koelsch,Mutlu Muglali,Michael Rohwerder et al.
Patrick Koelsch et al.
Vibrational sum-frequency-generation (SFG) spectroscopy experiments at electrified interfaces involve incident laser radiation at frequencies in the IR and near-IR/visible regions as well as a static electric field on the surface. Here we s...
Single fiber laser based wavelength tunable excitation for CRS spectroscopy [0.03%]
基于单根光纤激光器的CRS光谱学波长可调制激发光源
Jue Su,Ruxin Xie,Carey K Johnson et al.
Jue Su et al.
We demonstrate coherent Raman spectroscopy (CRS) using a tunable excitation source based on a single femtosecond fiber laser. The frequency difference between the pump and the Stokes pulses was generated by soliton self-frequency shifting (...
William H Renninger,Andy Chong,Frank W Wise
William H Renninger
Soliton area theorems express the pulse energy as a function of the pulse shape and the system parameters. From an analytical solution to the cubic-quintic Ginzbug-Landau equation, we derive an area theorem for dissipative optical solitons....
Localized waveguide formation in germanosilicate fiber transmitting femtosecond IR pulses [0.03%]
掺锗硅酸盐光纤中飞秒红外脉冲的局域波导形成
Haohua Tu,Yee Lin Koh,Daniel L Marks et al.
Haohua Tu et al.
Transmission of intense femtosecond 825 nm pulses progressively produces a waveguide at the entrance of a heavily Ge-doped silicate fiber. The waveguide behaves as a multimillimeter long-fiber bandpass filter that scatters away light with w...
Mustafa H Chowdhury,Stephen K Gray,James Pond et al.
Mustafa H Chowdhury et al.
We study the nature of fluorescence scattering by a radiating fluorophore placed near a metal nanoparticle with the finite-difference time-domain method. Angle-resolved light-scattering distributions are contrasted with those that result wh...
J P Landry,X Wang,Y Y Fei et al.
J P Landry et al.
We show that reflection of a monochromatic light from a semi-infinite medium covered with a stack of layered media is equivalent to that from an effective "semi-infinite medium" characterized by two distinctive optical dielectric constants ...