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Showing 1 to 12 of 106 entries
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Combined multi-modal photoacoustic tomography, optical coherence tomography (OCT) and OCT angiography system with an articulated probe for .

Biomedical optics express

Liu M, Chen Z, Zabihian B, Sinz C, Zhang E, Beard PC, Ginner L, Hoover E, Minneman MP, Leitgeb RA, Kittler H, Drexler W.
PMID: 27699106
Biomed Opt Express. 2016 Aug 10;7(9):3390-3402. doi: 10.1364/BOE.7.003390. eCollection 2016 Sep 01.

Cutaneous blood flow accounts for approximately 5% of cardiac output in human and plays a key role in a number of a physiological and pathological processes. We show for the first time a multi-modal photoacoustic tomography (PAT), optical coherence...

Synthesis, Morphological, and Electro-optical Characterizations of Metal/Semiconductor Nanowire Heterostructures.

Nano letters

Glaser M, Kitzler A, Johannes A, Prucnal S, Potts H, Conesa-Boj S, Filipovic L, Kosina H, Skorupa W, Bertagnolli E, Ronning C, Fontcuberta I Morral A, Lugstein A.
PMID: 27168031
Nano Lett. 2016 Jun 08;16(6):3507-13. doi: 10.1021/acs.nanolett.6b00315. Epub 2016 May 13.

In this letter, we demonstrate the formation of unique Ga/GaAs/Si nanowire heterostructures, which were successfully implemented in nanoscale light-emitting devices with visible room temperature electroluminescence. Based on our recent approach for the integration of InAs/Si heterostructures into Si nanowires...

Steering attosecond electron wave packets with light.

Science (New York, N.Y.)

Kienberger R, Hentschel M, Uiberacker M, Spielmann Ch, Kitzler M, Scrinzi A, Wieland M, Westerwalbesloh T, Kleineberg U, Heinzmann U, Drescher M, Krausz F.
PMID: 12114530
Science. 2002 Aug 16;297(5584):1144-8. doi: 10.1126/science.1073866. Epub 2002 Jul 11.

Photoelectrons excited by extreme ultraviolet or x-ray photons in the presence of a strong laser field generally suffer a spread of their energies due to the absorption and emission of laser photons. We demonstrate that if the emitted electron...

Attosecond-recollision-controlled selective fragmentation of polyatomic molecules.

Physical review letters

Xie X, Doblhoff-Dier K, Roither S, Schöffler MS, Kartashov D, Xu H, Rathje T, Paulus GG, Baltuška A, Gräfe S, Kitzler M.
PMID: 23368312
Phys Rev Lett. 2012 Dec 14;109(24):243001. doi: 10.1103/PhysRevLett.109.243001. Epub 2012 Dec 10.

Control over various fragmentation reactions of a series of polyatomic molecules (acetylene, ethylene, 1,3-butadiene) by the optical waveform of intense few-cycle laser pulses is demonstrated experimentally. We show both experimentally and theoretically that the responsible mechanism is inelastic ionization...

High power tungstate-crystal Raman laser operating in the strong thermal lensing regime.

Optics express

McKay A, Kitzler O, Mildren RP.
PMID: 24515030
Opt Express. 2014 Jan 13;22(1):707-15. doi: 10.1364/OE.22.000707.

We report an investigation into a double metal tungstate Raman laser when pumped at elevated average powers. Potassium gadolinium tungstate (KGW) was placed in an external cavity configured for second-Stokes output and pumped at pulse repetition rate of 38...

Attosecond probe of valence-electron wave packets by subcycle sculpted laser fields.

Physical review letters

Xie X, Roither S, Kartashov D, Persson E, Arbó DG, Zhang L, Gräfe S, Schöffler MS, Burgdörfer J, Baltuška A, Kitzler M.
PMID: 23003033
Phys Rev Lett. 2012 May 11;108(19):193004. doi: 10.1103/PhysRevLett.108.193004. Epub 2012 May 09.

We experimentally and theoretically demonstrate a self-referenced wave-function retrieval of a valence-electron wave packet during its creation by strong-field ionization with a sculpted laser field. Key is the control over interferences arising at different time scales. Our work shows...

The order of things and the classification of melanoma.

Dermatology practical & conceptual

Kittler H.
PMID: 23785615
Dermatol Pract Concept. 2012 Oct 31;2(4):204a01. doi: 10.5826/dpc.0204a01. Print 2012 Oct.

No abstract available.

Single-frequency 620  nm diamond laser at high power, stabilized via harmonic self-suppression and spatial-hole-burning-free gain.

Optics letters

Yang X, Kitzler O, Spence DJ, Williams RJ, Bai Z, Sarang S, Zhang L, Feng Y, Mildren RP.
PMID: 30768000
Opt Lett. 2019 Feb 15;44(4):839-842. doi: 10.1364/OL.44.000839.

Single longitudinal mode (SLM) operation of a 620 nm diamond Raman laser is demonstrated in a standing-wave cavity that includes a second-harmonic generation element. Mode competition provided by the harmonic mixing is shown to greatly increase mode stability, in...

Rescue therapy with alemtuzumab in B cell/antibody-mediated multiple sclerosis.

Therapeutic advances in neurological disorders

Akgün K, Metz I, Kitzler HH, Brück W, Ziemssen T.
PMID: 29552092
Ther Adv Neurol Disord. 2018 Mar 08;11:1756286418759895. doi: 10.1177/1756286418759895. eCollection 2018.

Alemtuzumab exerts its clinical efficacy by its specific pattern of depletion and repopulation of different immune cell subsets. Recently, single cases of multiple sclerosis patients who developed severe exacerbation after the first alemtuzumab application, accompanied by re-appearance of peripheral...

High-gain 87 cm-1 Raman line of KYW and its impact on continuous-wave Raman laser operation.

Optics express

Sarang S, Williams RJ, Lux O, Kitzler O, McKay A, Jasbeer H, Mildren RP.
PMID: 27661886
Opt Express. 2016 Sep 19;24(19):21463-73. doi: 10.1364/OE.24.021463.

We report a quasi-continuous-wave external cavity Raman laser based on potassium yttrium tungstate (KYW). Laser output efficiency and spectrum are severely affected by the presence of high gain Raman modes of low frequency (< 250 cm-1) that are characteristic...

Harnessing Real-World Data to Inform Decision-Making: Multiple Sclerosis Partners Advancing Technology and Health Solutions (MS PATHS).

Frontiers in neurology

Mowry EM, Bermel RA, Williams JR, Benzinger TLS, de Moor C, Fisher E, Hersh CM, Hyland MH, Izbudak I, Jones SE, Kieseier BC, Kitzler HH, Krupp L, Lui YW, Montalban X, Naismith RT, Nicholas JA, Pellegrini F, Rovira A, Schulze M, Tackenberg B, Tintore M, Tivarus ME, Ziemssen T, Rudick RA.
PMID: 32849170
Front Neurol. 2020 Aug 07;11:632. doi: 10.3389/fneur.2020.00632. eCollection 2020.

No abstract available.

Generalised theory of polarisation modes for resonators containing birefringence and anisotropic gain.

Optics express

Kitzler O, Spence DJ, Mildren RP.
PMID: 31252934
Opt Express. 2019 Jun 10;27(12):17209-17220. doi: 10.1364/OE.27.017209.

Polarisation eigenmode theory is well established for laser cavities in which the principal axes for gain and polarisation elements are parallel. Here we generalise the theory to include the case for gain axes at arbitrary angle to the birefringence,...

Showing 1 to 12 of 106 entries