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Showing 1 to 12 of 115 entries
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In search of a clinical examination.

Nurse educator

Guinn CA, Norwood BR.
PMID: 1574220
Nurse Educ. 1992 Mar-Apr;17(2):8. doi: 10.1097/00006223-199203000-00007.

No abstract available.

Towards ten-watt-level 3-5 µm Raman lasers using tellurite fiber.

Optics express

Zhu G, Geng L, Zhu X, Li L, Chen Q, Norwood RA, Manzur T, Peyghambarian N.
PMID: 25837094
Opt Express. 2015 Mar 23;23(6):7559-73. doi: 10.1364/OE.23.007559.

Raman lasers based on mid-infrared fibers operating at 3-5 µm atmospheric transparency window are attractive sources for several applications. Compared to fluoride and chalcogenide fibers, tellurite fibers are more advantageous for high power Raman fiber laser sources at 3-5...

High-power synchronously pumped femtosecond Raman fiber laser.

Optics letters

Churin D, Olson J, Norwood RA, Peyghambarian N, Kieu K.
PMID: 26030549
Opt Lett. 2015 Jun 01;40(11):2529-32. doi: 10.1364/OL.40.002529.

We report a high-power synchronously pumped femtosecond Raman fiber laser operating in the normal dispersion regime. The Raman laser is pumped by a picosecond Yb(3+)-doped fiber laser. It produces highly chirped pulses with energy up to 18 nJ, average...

High-quality crystallinity controlled ALD TiO2 for waveguiding applications.

Optics letters

Alasaarela T, Karvonen L, Jussila H, Säynätjoki A, Mehravar S, Norwood RA, Peyghambarian N, Kieu K, Tittonen I, Lipsanen H.
PMID: 24321899
Opt Lett. 2013 Oct 15;38(20):3980-3. doi: 10.1364/OL.38.003980.

We demonstrate a novel atomic layer deposition (ALD) process to make high-quality nanocrystalline titanium dioxide (TiO(2)) with intermediate Al(2)O(3) layers to limit the crystal size. The process is based on titanium chloride (TiCl(4))+water and trimethyl aluminum (TMA)+ozone processes at...

Observation of two-photon fluorescence for Rhodamine 6G in microbubble resonators.

Optics letters

Cohoon GA, Kieu K, Norwood RA.
PMID: 24875986
Opt Lett. 2014 Jun 01;39(11):3098-101. doi: 10.1364/OL.39.003098.

We report an observation of multi-photon excitation of organic chromophores in microbubble whispering gallery mode resonators. High-Q microbubble resonators were formed by heating a pressurized fused silica capillary to form a hollow bubble that was then filled with liquid....

Passive Q-switching of an all-fiber laser induced by the Kerr effect of multimode interference.

Optics express

Fu S, Sheng Q, Zhu X, Shi W, Yao J, Shi G, Norwood RA, Peyghambarian N.
PMID: 26191734
Opt Express. 2015 Jun 29;23(13):17255-62. doi: 10.1364/OE.23.017255.

A novel passively Q-switched all-fiber laser using a single mode-multimode-single mode fiber device as the saturable absorber based on the Kerr effect of multimode interference is reported. Stable Q-switched operation of an Er(3+)/Yb(3+) co-doped fiber laser at 1559.5 nm...

Nanoamorphous carbon as a blackbody source in plasmonic thermal emitters.

Applied optics

Demir V, Araci IE, Kropachev A, Skotheim T, Norwood RA, Peyghambarian N.
PMID: 21221147
Appl Opt. 2011 Jan 10;50(2):218-21. doi: 10.1364/AO.50.000218.

Ag/dielectric/Ag-type plasmonic thermal emitters (PTEs) following a hexagonal lattice were fabricated, and their plasmonic emission spectrums were characterized with Fourier transform infrared spectroscopy. Nanoamorphous carbon (NAC) is used as a dielectric layer. Doping NAC with various materials over a...

Characterization of a high-gain picosecond flash-lamp-pumped Nd:YAG regenerative amplifier.

Optics letters

Dawson MD, Schroeder WA, Norwood DP, Smirl AL, Weston J, Ettelbrick RN, Aubert R.
PMID: 19746102
Opt Lett. 1988 Nov 01;13(11):990-2. doi: 10.1364/ol.13.000990.

We evaluate the performance of a novel 10-Hz picosecond Nd:YAG regenerative amplifier configured as a selffiltering unstable resonator. Pulse energies of ~60 mJ in ~100 psec at 1.06 microm are achieved using a single 6-mm-diameter Nd:YAG rod, while mode-matching...

Variation of Bragg condition in low-glass-transition photorefractive polymers when recorded in reflection geometry.

Optics express

Eralp M, Thomas J, Tay S, Blanche PA, Schülzgen A, Norwood RA, Yamamoto M, Peyghambarian N.
PMID: 19547522
Opt Express. 2007 Sep 03;15(18):11622-8. doi: 10.1364/oe.15.011622.

Two low-glass transition photorefractive polymer composites were investigated in a symmetric reflection geometry. The holograms recorded in 105 mum thick devices have reached diffraction efficiencies as high as 60%. Unlike the gratings recorded in transmission geometry, holograms recorded in...

Effects of Methylphenidate on performance of a practical pistol shooting task: a quantitative electroencephalography (qEEG) study.

International archives of medicine

Paes F, Machado S, Arias-Carrión O, Domingues CA, Teixeira S, Velasques B, Cunha M, Minc D, Basile LF, Budde H, Cagy M, Piedade R, Kerick S, Menéndez-González M, Skaper SD, Norwood BA, Ribeiro P, Nardi AE.
PMID: 21294887
Int Arch Med. 2011 Feb 04;4(1):6. doi: 10.1186/1755-7682-4-6.

BACKGROUND: The present study examined absolute alpha power using quantitative electroencephalogram (qEEG) in bilateral temporal and parietal cortices in novice soldiers under the influence of methylphenidate (MPH) during the preparatory aiming period in a practical pistol-shooting task. We anticipated...

Optical and mechanical tolerances in hybrid concentrated thermal-PV solar trough.

Optics express

Diaz LR, Cocilovo B, Miles A, Pan W, Blanche PA, Norwood RA.
PMID: 29801277
Opt Express. 2018 May 14;26(10):A602-A608. doi: 10.1364/OE.26.00A602.

Hybrid thermal-PV solar trough collectors combine concentrated photovoltaics and concentrated solar power technology to harvest and store solar energy. In this work, the optical and mechanical requirements for optimal efficiency are analyzed using non-sequential ray tracing techniques. The results...

De novo macrocyclic peptides for inhibiting, stabilizing, and probing the function of the retromer endosomal trafficking complex.

Science advances

Chen KE, Guo Q, Hill TA, Cui Y, Kendall AK, Yang Z, Hall RJ, Healy MD, Sacharz J, Norwood SJ, Fonseka S, Xie B, Reid RC, Leneva N, Parton RG, Ghai R, Stroud DA, Fairlie DP, Suga H, Jackson LP, Teasdale RD, Passioura T, Collins BM.
PMID: 34851660
Sci Adv. 2021 Dec 03;7(49):eabg4007. doi: 10.1126/sciadv.abg4007. Epub 2021 Dec 01.

[Figure: see text].

Showing 1 to 12 of 115 entries