Results 91 to 100 of about 1,026,909 (225)

High-Efficiency Optical Parametric Oscillator Based on Stimulated Brillouin Scattering Pulse Shaping

IEEE Photonics Journal, 2019
We present an optical parametric oscillator (OPO) that uses a pump pulse shape tailored by stimulated Brillouin scattering. The theoretical analysis is carried out for comparison between Gaussian pump and the step function pulse pump.
Yulei Wang, Hang Yuan, Qingzheng Wang, Chengyu Zhu, Hengkang Zhang, Keyu Chen   +5 more
doaj   +1 more source

Tunable, High Pulse Energy and Narrow Linewidth Gas‐Filled Fiber Laser Across Near‐ and Mid‐Infrared

Laser &Photonics Reviews, EarlyView.
A cascaded gas‐filled anti‐resonant hollow‐core fiber architecture enables broadly tunable infrared Raman lasers spanning ∼1.4–4.6 µm while maintaining microjoule‐level pulse energies and gigahertz‐level linewidths. The approach combines a wavelength‐tunable pump laser with optimized Raman frequency conversion, providing a compact route to high ...
Yazhou Wang, Marcello Meneghetti, Manoj K. Dasa, Timothy Bate, J. E. Antonio‐Lopez, Ian A. Davidson, Qiang Fu, Jaroslaw Rzegocki, Gregory T. Jasion, Francesco Poletti, Rodrigo Amezcua‐Correa, Christos Markos   +11 more
wiley   +1 more source

Detection of nanometer-scale diameter changes in optical fibers with forward stimulated Brillouin scattering [PDF]

EPJ Web of Conferences
We investigate the potential of forward-stimulated Brillouin scattering in optical fibers to detect changes of the fiber diameter with nanometer resolution.
Álvarez-Ocampo C., Delgado-Pinar M., Díez A., Cruz J. L., Andrés M. V.   +4 more
doaj   +1 more source

Collective stimulated Brillouin scatter

, 2011
We develop a statistical theory of stimulated Brillouin backscatter (BSBS) of a spatially and temporally partially incoherent laser beam for laser fusion relevant plasma. We find a new collective regime of BSBS which has a much larger threshold than the classical threshold of a coherent beam in long-scale-length laser fusion plasma.
Korotkevich, Alexander O., Lushnikov, Pavel M., Rose, Harvey A.   +2 more
openaire   +2 more sources

Exploring a Ugi‐Mediated Polymerization‐Induced Self‐Assembly Approach to Peptoid Particles

Macromolecular Rapid Communications, EarlyView.
Ugi‐mediated polymerization‐induced self‐assembly (U‐PISA) enables the one‐pot synthesis of PEG‐stabilized polypeptoid nanoparticles under mild aqueous conditions. By tuning PEG molar mass and feed composition, tunable spherical and worm‐like nano‐objects are obtained.
Thi Phuong Thu Nguyen, Maria Cristina Molaro, Hao‐Ning Tien, Lei Lei, Pierre Stiernet, Clemence Le Coeur, Federica Sodano, Antoine Debuigne, Benoit Couturaud   +8 more
wiley   +1 more source

Stimulated Brillouin scattering in glasses

Electronics Letters, 1967
An experiment is described in which the laser-fracture threshold of glass is compared with the stimulated-Brillouin-scattering threshold and intensity. It is demonstrated by means of an alteration of the laser-emission spectrum, which acts on s.B.s. and not on fracturing, that the two effects are not related.
J.P. Budin, A. Donzel, J. Ernest, J. Raffy   +3 more
openaire   +1 more source

Laser‐Induced‐Structural Transformation in Ti3CNTx MXene Monitored by Raman Spectroscopy with DFT Insight

Small, EarlyView.
A multi‐wavelength Raman study of microwave‐assisted hydrothermal Ti3CNTx MXene, supported by theoretical calculations, identifies laser‐power thresholds and evaluates its ambient‐condition stability. ABSTRACT MXenes are emerging 2D nanomaterials that have attracted growing attention for their highly tunable atomic structure, composition, and surface ...
Subrata Ghosh, Narayan N. Som, Muhammad Abiyyu Kenichi Purbayanto, Dorota Moszczyńska, Anna Wójcik, Carlo S. Casari, Agnieszka Maria Jastrzębska, Madhurya Chandel   +7 more
wiley   +1 more source

100th Anniversary of Brillouin Scattering

This reprint aims to offer readers new insights on the development of Brillouin scattering spectroscopy in materials sciences since its discovery in 1922.

core   +1 more source

Brillouin suppression through longitudinal structural variation in high nonlinearity silica holey fibers

We consider longitudinal variation in the fiber structure as a method of increasing the Brillouin linewidth and threshold within high nonlinearity silica holey fibers.
Furusawa, K., Petropoulos, P., Broderick, N.G.R., Richardson, D.J., Yusoff, Z., Monro, T.M., Poletti, F.   +6 more
core   +1 more source

Broadband and Enhanced Second‐Harmonic Generation in Metallic 3R‐TaS2

Small, EarlyView.
A pronounced and robust SHG response has been observed in metallic 3R‐TaS2. It shows broadband SH conversion from 1020 nm to 1410 nm. Moreover, compared to the sapphire substrate, 3R‐TaS2 flakes with various thicknesses on the gold substrate showed different SHG enhancement; the enhancement factors range from 2.7 to 45.5.
Ruo‐Si Chen, Chuanyu Wang, Xiangqi Liu, Zhuoyuan Lu, Shuyao Qiu, Boqing Liu, Tieyu Lü, Shi‐Rui Zhang, Yanfeng Guo, Yuerui Lu   +9 more
wiley   +1 more source