TITLE

Efficient white-light continuum generation in transparent solid media using ∼250 fs, 1053 nm laser pulses

AUTHOR(S)
Imran, T.; Figueira, G.
PUB. DATE
April 2010
SOURCE
AIP Conference Proceedings;4/16/2010, Vol. 1228 Issue 1, p370
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report white-light continuum generation in solid-state media (fused silica and sapphire) using seed pulses centered at 1053 nm and at a repetition rate of 10 Hz. We have investigated the influence of different parameters, such as changing the focal position and the energy of the incident pulse within the medium to obtain optimal white-light continuum. Preliminary results indicate that for intense laser pulses, waist position inside the media and input energy are crucial for high efficiency white-light continuum generation over the wavelength range 400–1100 nm. It was also found that pulses centered at 1053 nm generate a flatter spectrum, with higher white-light continuum efficiency. Such a flat response over a broad bandwidth in the continuum has the potential to be efficiently compressed to shorter durations.
ACCESSION #
50174379

 

Related Articles

  • Densification of silica glass induced by 0.8 and 1.5 μm intense femtosecond laser pulses. Saliminia, A.; Nguyen, N. T.; Chin, S. L.; Vallée, R. // Journal of Applied Physics;5/1/2006, Vol. 99 Issue 9, p093104 

    We investigate the physical mechanisms responsible for waveguide formation in silica glass induced by 1 kHz intense femtosecond laser pulses from a Ti-sapphire laser at 0.8 μm as well as from a femtosecond optical parametric amplifier at 1.5 μm. It is demonstrated that the densification...

  • Metallic-like photoluminescence and absorption in fused silica surface flaws. Laurence, Ted A.; Bude, Jeff D.; Shen, Nan; Feldman, Theodore; Miller, Philip E.; Steele, William A.; Suratwala, Tayyab // Applied Physics Letters;4/13/2009, Vol. 94 Issue 15, p151114 

    Using high-sensitivity confocal time-resolved photoluminescence (PL) techniques, we report an ultrafast PL (40 ps–5 ns) from impurity-free surface flaws on fused silica, including polished, indented, or fractured surfaces of fused silica, and from laser-heated evaporation pits. This PL is...

  • Microfiber knot dye laser based on the evanescent-wave-coupled gain. Jiang, Xiaoshun; Song, Qinghai; Xu, Lei; Fu, Jian; Tong, Limin // Applied Physics Letters;6/4/2007, Vol. 90 Issue 23, p233501 

    The authors demonstrate a composite microring laser formed by immersing a silica microfiber knot in a rhodamine 6G dye solution. When the dye molecules are evanescently pumped by 532 nm wavelength laser pulses guided along a 350 μm diameter knot, lasing oscillation occurs inside the...

  • Ultrafast laser-induced melting of glass. Koubassov, V.; Laprise, J.F.; Théberge, F.; Förster, E.; Sauerbrey, R.; Müller, B.; Glatzel, U.; Chin, S.L. // Applied Physics A: Materials Science & Processing;2004, Vol. 79 Issue 3, p499 

    The interaction of intense femtosecond laser pulses with wide band-gap fused silica and quartz is investigated. It is shown that during target irradiation, melting of SiO2 occurs. Laser pulses with fluences above the damage threshold induce partial phase transition of fused silicia into quartz...

  • Laser backside etching of fused silica with ultra-short pulses. Böhme, R.; Pissadakis, S.; Ruthe, D.; Zimmer, K. // Applied Physics A: Materials Science & Processing;Oct2006, Vol. 85 Issue 1, p75 

    Laser backside etching of transparent materials like fused silica at the interface to liquids with sub-picosecond UV laser pulses using a pyrene/toluene solution is achieved. For the experimental conditions applied, the etching effect is rather weak with measured rates of the order of 0.1...

  • Evolution of a femtosecond laser-induced plasma and energy transfer processes in a SiO2 microvolume detected by the third harmonic generation technique. Gordienko, V. M.; Potemkin, F. V.; Mikheev, P. M. // JETP Letters;Oct2009, Vol. 90 Issue 4, p263 

    A nonlinear optical method has been proposed for probing the evolution of a plasma and energy transfer processes in the microvolume of a transparent dielectric using the third-harmonic probe signal. The electron self-trapping time has been estimated as t = 150 ± 80 fs. A decrease in the...

  • Inverse melting in stressed fused silica. Bouchut, Philippe // Applied Physics Letters;12/3/2012, Vol. 101 Issue 23, p231905 

    The emissive properties of proton implanted fused silica surfaces have been studied by laser beam annealing. When submitted to a high thermal step from a focused CO2 laser, an intense near infra-red thermoluminescence peak rises at a heating rate threshold. The in plane tensile stress relaxes...

  • DECREASE OF SUBSURFACE DAMAGE IMPACT TO RESISTANCE OF LASER RADIATION OF OPTICAL SUBSTRATES. Juškevičius, Kęstutis; Buzelis, Rytis; Kičas, Simonas; Tolenis, Tomas; Drazdys, Ramutis; Selskis, Algirdas; Melninkaitis, Andrius; Liukaitytė, Simona; Tumosa, Dainius; Kraujalienė, Irena // International Conference: Radiation Interaction with Material & ;2012, p435 

    In this work we report an experimental investigation of subsurface damage (SSD) in conventionally polished fused silica (FS) substrates which are widely used in laser applications and directly influence performances of optical elements. In the present investigation, different duration of acid...

  • Void recording in silica. Hashimoto, T.; Juodkazis, S.; Misawa, H. // Applied Physics A: Materials Science & Processing;May2006, Vol. 83 Issue 2, p337 

    We report on the formation of voids of 200–300 nm in diameter by single femtosecond pulses (800 nm/150 fs/ <100 nJ) inside silica glass. The mechanism of void formation can be understood in terms of dielectric breakdown and shock wave formation. The voids were recorded below the threshold...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics