Results 81 to 90 of about 116,825 (204)

Atmospheric temperature measurements, using Raman lidar [PDF]

The Raman-shifted return of a lidar system had been used to make atmospheric temperature measurements. The measurements were made along a horizontal path at temperatures ranging from -30 to 30 C and at ranges of about 100 meters.
Coney, T. A., Salzman, J. A.
core   +1 more source

Strain distribution analysis of sputter-formed strained Si by tip-enhanced Raman spectroscopy

, 2011
Simultaneous nanometer-scale measurements of the strain and surface undulation distributions of strained Si (s-Si) layers on strain-relief quadruple-Si1-xGex-layer buffers, using a combined atomic force microscopy (AFM) and tip-enhanced Raman ...
Akifumi Kasamatsu, Alonso, Hanafusa, Harold M. H. Chong, Hirashita, Hiroaki Hanafusa, Hiroshi Mizuta, Kutsukake, Lee, Lutz, Maekawa, Maiti, Nobumitsu Hirose, Rosenbrad, Saito, Sawano, Sawano, Sawano, Takashi Mimura, Toshiaki Matsui, Tsang, Wong, Wu, Yoshiyuki Suda, Zhu   +24 more
core   +1 more source

An Archaeometric Study of Twelve Porcelain Chinese Sherds Found at the Santana Convent in Lisbon—16th to 18th Centuries

Heritage
Twelve sherds of blue-and-white Chinese porcelains recovered from archaeological excavations in the Santana Convent (Ming and Qing Dynasties) in Lisbon were studied using several non-invasive spectroscopies, namely micro-Raman, X-ray Fluorescence (XRF ...
Luís F. Vieira Ferreira, Isabel Ferreira Machado, Rosa Varela Gomes, Mário Varela Gomes, Manuel F. C. Pereira   +4 more
doaj   +1 more source

Rapid Detection of Adulterants in Whey Protein Supplement by Raman Spectroscopy Combined with Multivariate Analysis

Molecules, 2019
The growing demand for whey protein supplements has made them the target of adulteration with cheap substances. Therefore, Raman spectroscopy in tandem with chemometrics was proposed to simultaneously detect and quantify three common adulterants ...
Xianzhi Jiao, Yaoyong Meng, Kangkang Wang, Wei Huang, Nan Li, Timon Cheng–Yi Liu   +5 more
doaj   +1 more source

Strongly coupled large-angle stimulated Raman scattering of short laser pulses in plasma-filled capillaries

, 2005
Strongly coupled large-angle stimulated Raman scattering (LA SRS) of a short intense laser pulse proceeds in a plane plasma-filled capillary differently than in a plasma with open boundaries. Oblique mirror reflections off capillary walls partly suppress
Akhiezer A. I., Andreev N. E., Patrick Mora, Serguei Kalmykov   +3 more
core   +1 more source

Cascaded four-wave mixing in liquid-core optical fibers

APL Photonics
Ultrafast nonlinear interactions in optical fibers are commonly employed for generating light with tailored properties, with four-wave mixing (FWM) being a widely used mechanism.
Saher Junaid, Johannes Hofmann, Mario Chemnitz, Markus Blothe, Frank Setzpfandt, Stefan Nolte, Markus A. Schmidt   +6 more
doaj   +1 more source

A Theoretical Investigation of an Ultrawide S-, C- and L-Band-Tunable Random Fiber Laser Based on the Combination of Tellurite Fiber and Erbium-Doped Fiber

Photonics
In this paper, we present a new scheme to generate ultrawide tunable random fiber lasers (RFLs) covering the S-, C- and L-band by combining the broadband Raman gain in tellurite fibers and the active gain in erbium-doped fibers.
Lu Chen, Yang Li, Houkun Liang, Han Wu
doaj   +1 more source

High-pressure investigations of CaTiO3 up to 60 GPa using X-ray diffraction and Raman spectroscopy

, 2010
In this work, we investigate calcium titanate (CaTiO3 - CTO) using X-ray diffraction and Raman spectroscopy up to 60 and 55 GPa respectively. Both experiments show that the orthorhombic Pnma structure remains stable up to the highest pressures measured ...
Benjamin Krikler, E. Salje, Gaston Garbarino, J. Angel, Jens Kreisel, K. Rabe, M. Carpenter, Mael Guennou, N. L. Ross, P. Gillet, Pierre Bouvier, R. H. Mitchell, R. Jeanloz, R. M. Hazen, Raphaël Haumont, X. Wu   +15 more
core   +3 more sources

Magnetism of a tetrahedral cluster spin-chain

, 2001
We discuss the magnetic properties of a dimerized and completely frustrated tetrahedral spin-1/2 chain. Using a combination of exact diagonalization and bond-operator theory the quantum phase diagram is shown to incorporate a singlet-product, a dimer ...
A. Ghosh, A. Honecker, A. V. Chubukov, B. S. Shastry, C. Jurecka, E. Müller-Hartmann, H. Kageyama, H. T. Wang, I. Bose, K. Totsuka, Klaus W. Becker, M. Johnsson, M. Windt, O. A. Starykh, O. Golinelli, O. P. Sushkov, P. A. Fleury, P. Lemmens, P. Lemmens, P. Lemmens, R. Eder, S. Gopalan, S. Miyahara, S. R. White, S. Sachdev, S. Trebst, T. Sakai, V. N. Kotov, W. Brenig, Wolfram Brenig, Y. Kato   +30 more
core   +1 more source

Photoluminescence from nanocrystalline graphite monofluoride

, 2010
We synthesize and study the structural and optical properties of nanocrystalline graphene monofluoride and graphite monofluoride, which are carbon-based wide bandgap materials.
Crespi, Vincent H., Gutierrez, Humberto R., Hao, Qingzhen, Okino, Fujio, Sofo, Jorge O., Sparks, Justin R., Tang, Youjian, Wang, Bei, Zhu, Jun   +8 more
core   +1 more source