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Diffraction of a CW atom laser in the Raman-Nath regime
[article]
2018
arXiv
pre-print
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In this work, we demonstrate a key step towards such an interferometry by demonstrating a diffraction of an 'atom laser' in the Raman-Nath regime. ...
The condition for Kapitza-Dirac diffraction comes from the Raman-Nath approximation. ...
Therefore, to satisfy the Raman-Nath condition for thin grating, the interaction time has to be less than 42 µs. ...
arXiv:1802.01524v1
fatcat:nq2jqy2xrzbqtg2prbt34yhkr4
Wide bandwidth slow light using a Raman fiber amplifier
2005
Optics Express
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We demonstrate an all-optical tunable pulse delay scheme that utilizes the power-dependent variation of the refractive index that accompanies stimulated Raman scattering in an optical fiber. ...
The gain characteristics of the Raman amplifier are shown in Fig. 2 . ...
Measurements of slow light in this Raman amplifier are shown in Fig. 4 where the signal wavelength is 1637 nm, which is very close to the peak of the Raman gain profile. ...
doi:10.1364/opex.13.006092
pmid:19498618
fatcat:3nwcac3i55cn5lh6ptqyuhl4xy
Nd: YAG Laser-Pumped Raman-Shifted Methane Laser as an Eye-safe Laser Rangefmder
1989
Defence Science Journal
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It is a Raman-shifted laser where an Nd:YAG laser emitting at a wavelength of 1.06 micron is used as pumping source that is incident on a Raman cell containing methane gas at a very high pressure, rsulting ...
This Raman-shifted laser rangefinder has then been analysed theoretically. The design of such a laser is proposed and it is planned to be fabricated and tested by us in future. ...
Jai Paul Dudeja The sampled pulse initiates a counter circuit of relatively high frequency (generally between 15 and 30 MHz) that is stopped by the threshold crossing of the return pulse which is reflected ...
doi:10.14429/dsj.39.4768
fatcat:vsu7wl5e7neubgtl3si46kppby
Resonance Raman measurements of carotenoids using light-emitting diodes
2008
Journal of Biomedical Optics
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The sensitivity and reproducibility of the LED Raman instrument compares favorably to laser-based Raman spectrometers. ...
The f/1.3 optical system has high optical throughput and single photon sensitivity, both of which are crucial in LED-based Raman measurements. ...
FIG. 4 : 4 Comparison of laser-Raman and LED-Raman carotenoid measurements on 38 people. The absolute calibration of the LED instrument was chosen to match the laser-Raman instrument. ...
doi:10.1117/1.2952075
pmid:19021353
fatcat:wyyvhfn3zzfxtieoal5aadx7ma
Access to the Heart – Evolution of surgical techniques
2015
Global Surgery
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Correspondence to: Jai Raman, Department of Cardiovascular and Thoracic Surgery, Rush University Medical Center,1725 W Harrison St, Chicago, Il 60612, USA, Tel: 1-773-9190088, Fax: 1-312-563 4388; E-mail ...
Raman & Song described the modification to this by advocating prophylactic sternal plating in the high-risk patient [11] . ...
doi:10.15761/gos.1000112
fatcat:aa7kdoc2erd5fkyoau6d6spaqm
Laparoendoscopic single-site pyeloplasty
2011
Therapeutic Advances in Urology
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using a single 3-cm incision to introduce three adjacent trocars (two 5 mm and one 10 mm) [Raman et al. 2007] . ...
Reusable trocars present the benefit of cost savings, although specialized lowprofile head trocars are necessary to minimize extracorporeal collision during LESS [Raman et al. 2007 ]. ...
doi:10.1177/1756287211411357
pmid:21904570
pmcid:PMC3159399
fatcat:g7isojqpuzcinjqnp4wmvducuq
Stimulated Raman Scattering And Four-Wave Mixing: Steady-State Plane-Wave Analytic Solutions
1981
Los Alamos Conf on Optics '81
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Prognostic markers for urologic cancers
2016
The Canadian journal of urology
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Furthermore, whilst these authors noted an association of NLR with overall survival, there was no incremental benefit over a base model constructed RAMAN JD. Prognostic markers for urologic cancers. ...
pmid:26892056
fatcat:fllucil52bdrbe7vorcpd7rpme
Reply to "Comment on 'Understanding first-order Raman spectra of boron carbides across the homogeneity range' "
2022
PHYSICAL REVIEW MATERIALS
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), (ii) similarity of the Raman spectrum of boron carbide to the Raman spectrum of α rhombohedral boron, and (iii) dependence of the experimental Raman spectrum on the frequency of the excitation laser ...
In response to Werheit's Comment, we first discuss the following three points: (i) Attribution of the Raman bands with the help of calculations based on the density functional perturbation theory (DFPT ...
(DFPT), (ii) similarity of the Raman spectrum of boron carbide to the Raman spectrum of α rhombohedral boron, (iii) dependence of the experimental Raman spectrum on the frequency of the excitation laser ...
doi:10.1103/physrevmaterials.6.016602
fatcat:qox4gxajrrbx5g4lixsgb5tq44
Graph analysis
2013
First International Workshop on Graph Data Management Experiences and Systems - GRADES '13
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Post Radial Artery Harvest Hand Perception
2002
Circulation Journal
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E-mail: cvshata@aol.com Post Radial Artery Harvest Hand Perception Postoperative 12-month Follow-up Results Mitsumasa Hata, MD; Jai Raman, FRACS; Siven Seevanayagam, FRACS; David Hare, MD; Brian F Buxton ...
doi:10.1253/circj.66.816
pmid:12224818
fatcat:qokgciytkra2tmww3vzh6qvyme
Passive ventricular constraint
2003
Progress in Biophysics and Molecular Biology
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In situ Raman spectroscopy studies of bulk and surface metal oxide phases during oxidation reactions
1996
Catalysis Today
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However, the Raman experiments could not provide any molecular structural information about the amorphous and surface phases also present in this bulk metal oxide catalyst because of the strong Raman scattering ...
The in situ Raman studies of the bulk V-P-O catalysts provided information about the bulk crystalline phases, the hemihydrate precursor and its transformation to vanadyl pyrophosphate. ...
During this period, the transformed catalyst only exhibited the Raman features of vanadyl pyrophosphate and no additional Raman bands were observed during in situ Raman studies of n-butane oxidation over ...
doi:10.1016/s0920-5861(96)00091-0
fatcat:dir3g6eglnflhnck2shiqfi7j4
Multimodal coherent anti-Stokes Raman spectroscopic imaging with a fiber optical parametric oscillator
2011
Applied Physics Letters
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Femtosecond coherent anti-Stokes Raman scattering spectroscopy using supercontinuum generated from a photonic crystal fiber ...
The coherent anti-Stokes Raman scattering (CARS) spectrum of cyclohexane was measured and vibrational resonant Raman peaks separated by 70 cm À1 were clearly resolved. ...
Tunable excitation source for coherent Raman spectroscopy based on a single fiber laser We demonstrate a wavelength tunable optical excitation source for coherent Raman scattering (CRS) spectroscopy based ...
doi:10.1063/1.3589356
pmid:21677908
pmcid:PMC3114562
fatcat:a443ic3r7rdspehzizr7ye62jm
Appearance of radial breathing modes in Raman spectra of multi-walled carbon nanotubes upon laser illumination
2008
Chemical Physics Letters
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The Raman spectra of the multi-walled carbon nanotubes are studied with the laser power of 5-20 mW. We observe the Raman bands at $1352, 1581, 1607, and 2700 cm À1 with 5 mW laser power. ...
The spectral resolution and spot size of Raman measurement were 0.5 cm À1 and $1 lm, respectively. ...
Table 2 shows the details of Raman analysis at different laser power for the sample grown at 850°C. ...
doi:10.1016/j.cplett.2008.02.057
fatcat:jolt53djq5dfjjfxd7tnh5324i
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