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Efficient generation of radiation in the mid- and far- infrared relies primarily on lasers and coherent nonlinear optical phenomena driven by lasers. This wavelength range lacks of luminescent devices because the spontaneous emission rate…

We demonstrate a new highly tunable technique for generating meter-scale low density plasma waveguides. Such guides can enable electron acceleration to tens of GeV in a single stage. Plasma waveguides are imprinted in hydrogen gas by…

Optics · Physics 2020-08-19 B. Miao , L. Feder , J. E. Shrock , A. Goffin , H. M. Milchberg

We experimentally observe the action of multiple light pulses on the transverse motion of a continuous beam of fullerenes. The light potential is generated by non-resonant ultra-short laser pulses in perpendicular spatial overlap with the…

Atomic and Molecular Clusters · Physics 2013-07-02 Paul Venn , Hendrik Ulbricht

The generation of optical pulses at ultra low bias level, thus low energy cost, is explored in a commercial microcavity semiconductor laser in view of testing the principle of energy efficient information encoding in potential integrated…

Optics · Physics 2019-03-27 Tao Wang , Gaofeng Wang , Gian Piero Puccioni , Gian Luca Lippi

A relatively efficient scheme to generate energetic $\gamma$-ray is all-optical Compton scattering based on wakefield acceleration and plasma mirror where planar or concave solid target is usually employed to reflect driving pulse. For flat…

Plasma Physics · Physics 2022-04-21 Q. Yu

Nonlinear optics is crucial for shaping the spatial structure of shortwave light and its interactions with matter, but achieving this through simple harmonic generation with a single pump is challenging. This study demonstrates nonlinear…

Optics · Physics 2025-06-23 Ting-Ting Liu , Shi-Hui Ding , Chun-Yu Li , Hui Liu , Zhi-Han Zhu , Peng Chen , Yan-Qing Lu

An optical parametric chirped pulse amplifier fully based on Yb lasers at 500 kHz is described. Passive optical-synchronization is achieved between a fiber laser-pumped white-light and a 515 nm pump produced with a 200 W picosecond Yb:YAG…

In this paper we discuss the design and performance of a collimated Knudsen source which has the benefit of a simple design over recirculating sources. Measurements of the flux, transverse velocity distribution and brightness at different…

Atomic Physics · Physics 2015-11-25 Steinar H W Wouters , Gijs ten Haaf , Peter H A Mutsaers , Edgar J D Vredenbregt

Cryogenic operation in conjunction with new test-mass materials promises to reduce the sensitivity limitations from thermal noise in gravitational-wave detectors. The currently most advanced materials under discussion are crystalline…

We report the construction of a simple, light weight and compact atomic beam spectroscopy cell for Strontium atoms. The cell is built using glass blowing technique and includes a simple Titanium Sublimation Pump for active pumping of the…

Atomic Physics · Physics 2017-03-30 Gunjan Verma , Chetan Vishwakarma , C. V. Dharmadhikari , Umakant D. Rapol

We report on the optical commissioning of the high power laser beam circulator (LBC) for the high brightness Compton {\gamma}-ray source Extreme Light Infrastructure for Nuclear Physics. Tests aiming at demonstrating the optical…

Microring resonators made from silicon are becoming a popular microscale device format for generating photon pairs at telecommunications wavelengths at room temperature. In compact devices with a footprint less than $5\times 10^{-4}$…

Optics · Physics 2016-02-16 Marc Savanier , Ranjeet Kumar , Shayan Mookherjea

We use numerical simulations to demonstrate that a source of bright collimated vortex $\gamma$-ray with large orbital angular momentum can be achieved by irradiating a circularly polarized laser with an intensity about…

Plasma Physics · Physics 2023-03-08 Cui-Wen Zhang , Mamat-Ali Bake , Hong Xiao , Hai-Bo Sang , Bai-Song Xie

High energy photons can be generated via inverse Compton scattering (ICS) in the collision between energetic electrons and intense laser pulse. The development of laser plasma accelerators promises compact and all-optical gamma-ray sources…

Optics · Physics 2022-02-22 Xuesong Geng , Liangliang Ji , Baifei Shen

The on-chip creation of coherent light at visible wavelengths is crucial to field-level deployment of spectroscopy and metrology systems. Although on-chip lasers have been implemented in specific cases, a general solution that is not…

We present results of a bright polarization-entangled photon source operating at 1552 nm via type-II collinear degenerate spontaneous parametric down-conversion in a periodically poled potassium titanyl phosphate crystal. We report a…

Quantum Physics · Physics 2010-12-22 P. G. Evans , J. Schaake , R. S. Bennink , W. P. Grice , T. S. Humble

Lasers and LEDs display a statistical distribution in the number of photons emitted in a given time interval. New applications exploiting the quantum properties of light require sources for which either individual photons, or pairs, are…

Quantum Physics · Physics 2015-05-13 Andrew J Shields

Optical quadratic nonlinearity is ultrafast in nature, while parametric interaction usually manifests only the broadband characteristic. Enormous progress has been made toward broadband phase-matching for parametric amplification and wide…

Using the tilted-pulse-intensity-front scheme, we generate single-cycle terahertz (THz) pulses by optical rectification of femtosecond laser pulses in LiNbO3. In the THz generation setup, the condition that the image of the grating…

Optics · Physics 2015-05-27 H. Hirori , A. Doi , F. Blanchard , K. Tanaka

Inkjet-printed liquid crystal (LC) droplets exhibit an intricate spatially-varying birefringence due to their complex internal director configuration. While such anisotropy is often viewed as a drawback when LC droplets are used as…

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