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Diffraction of a CW atom laser in the Raman-Nath regime [article]

Sumit Sarkar, Jay Mangaonkar, Chetan Vishwakarma, Umakant D. Rapol
2018 arXiv   pre-print
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

Jay E. Sharping, Yoshitomo Okawachi, Alexander L. Gaeta
2005 Optics Express  
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

Jai Paul Dudeja
1989 Defence Science Journal  
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

Scott D. Bergeson, Justin B. Peatross, N. Jay Eyring, John F. Fralick, Douglas N. Stevenson, Scott B. Ferguson
2008 Journal of Biomedical Optics  
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

Jai Raman
2015 Global Surgery  
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

Thomas Clements, Jay D. Raman
2011 Therapeutic Advances in Urology  
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

Jay R. Ackerhalt, Donald H. Liebenberg
1981 Los Alamos Conf on Optics '81  
doi:10.1117/12.932058 fatcat:wfvoar3c4ze6dfemjt57dmvnju

Prognostic markers for urologic cancers

Jay D Raman
2016 The Canadian journal of urology  
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' "

Guido Roma, Antoine Jay, Nathalie Vast, Olivier Hardouin Duparc, Gaëlle Gutierrez
2022 PHYSICAL REVIEW MATERIALS  
), (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

Adam Welc, Raghavan Raman, Zhe Wu, Sungpack Hong, Hassan Chafi, Jay Banerjee
2013 First International Workshop on Graph Data Management Experiences and Systems - GRADES '13  
doi:10.1145/2484425.2484432 dblp:conf/sigmod/WelcRWHCB13 fatcat:ufrqv6bgorhs7ptkyedn3kdrbu

Post Radial Artery Harvest Hand Perception

Mitsumasa Hata, Jai Raman, Siven Seevanayagam, David Hare, Brian F Buxton
2002 Circulation Journal  
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

John M Power, Melissa Byrne, Jai Raman, Clif Alferness
2003 Progress in Biophysics and Molecular Biology  
doi:10.1016/s0079-6107(03)00016-6 pmid:12732279 fatcat:a3j2nuwjdrhbbl2it4nzxalcwa

In situ Raman spectroscopy studies of bulk and surface metal oxide phases during oxidation reactions

Israel E. Wachs, Jih-Mirn Jehng, Goutam Deo, Bert M. Weckhuysen, Vadim V. Guliants, Jay B. Benziger
1996 Catalysis Today  
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

Yan-Hua Zhai, Christiane Goulart, Jay E. Sharping, Huifeng Wei, Su Chen, Weijun Tong, Mikhail N. Slipchenko, Delong Zhang, Ji-Xin Cheng
2011 Applied Physics Letters  
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

Padmnabh Rai, Dipti R. Mohapatra, K.S. Hazra, D.S. Misra, Jay Ghatak, P.V. Satyam
2008 Chemical Physics Letters  
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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