TITLE

Subpicosecond pulses from a gain-switched polymer distributed feedback laser

AUTHOR(S)
Goossens, Mark; Ruseckas, Arvydas; Turnbull, Graham A.; Samuel, Ifor D.W.
PUB. DATE
July 2004
SOURCE
Applied Physics Letters;7/5/2004, Vol. 85 Issue 1, p31
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The emission dynamics of polymer distributed feedback lasers have been studied following excitation by femtosecond laser pulses. The lasers were found to generate pulses as short as 800 fs. The dynamics were investigated as a function of pump power and excitation spot size. Simple rate equations modeling the amplification of spontaneous emission are shown to describe the behavior of the lasing dynamics observed.
ACCESSION #
13605561

 

Related Articles

  • Quantum beats of free and bound excitons in GaN. Kyhm, K.; Taylor, R. A.; Ryan, J. F.; Aoki, T.; Kuwata-Gonokami, M.; Beaumont, B.; Gibart, P. // Applied Physics Letters;8/20/2001, Vol. 79 Issue 8, p1097 

    We present spectrally resolved and time-integrated four-wave mixing measurements at coherent dynamics of bound excitons in a high-quality GaN epilayer. Coherent excitation, with co-circular polarized light, of the neutral donor-bound excitons (D [sup 0]X) and A excitons (X[sub A]) results in...

  • Efficient signal recovery from pulsed lasers. Kumar, D.; Nauman, R. V.; McGlynn, S. P. // Review of Scientific Instruments;Mar86, Vol. 57 Issue 3, p365 

    This paper is complementary to a recent work [Kumar et al., Rev. Sci. Instrum. 54, 463 (1983)] that described a simple, inexpensive technique for correcting laser-induced, pulsed signals for fluctuations of the individual laser excitation pulses. This inexpensive pulse-by-pulse correction...

  • Absorption saturation and self-action processes under resonant excitation of the basic exciton transition in CdSe/ZnS colloidal quantum dots. Dneprovskiĭ, V. S.; Zhukov, E. A.; Kozlova, M.V.; Wumaier, T.; Hieu, Dau Sy; Artem'ev, M. V. // Physics of the Solid State;Sep2010, Vol. 52 Issue 9, p1941 

    The revealed absorption saturation and Fresnel diffraction of ultrashort laser pulses under resonant excitation of the basic exciton transition in CdSe/ZnS quantum dots (a strongly absorbing colloidal solution) have been explained by the processes of filling of states of a two-level system with...

  • Spectral focusing: High spectral resolution spectroscopy with broad-bandwidth laser pulses. Hellerer, Thomas; Enejder, Annika M.K.; Zumbusch, Andreas // Applied Physics Letters;7/5/2004, Vol. 85 Issue 1, p25 

    In this work, we show how broad-bandwidth femtosecond pulses can be used to achieve high spectral resolution in nonlinear spectroscopy and microscopy. Our approach is based on chirping the excitation pulses in order to focus their entire bandwidth into a narrow spectral region. We show that...

  • Amplified spontaneous emission in para-sexiphenyl bulk single crystals. Losio, Paolo A.; Hunziker, Christoph; Günter, Peter // Applied Physics Letters;6/11/2007, Vol. 90 Issue 24, p241103 

    Amplified spontaneous emission (ASE) in single crystals of para-sexiphenyl grown in the β phase by vapor transport is demonstrated upon photoexcitation at 355 nm. Excitation with femtosecond laser pulses leads to dual wavelength ASE at 427 and 450 nm, while excitation with nanosecond laser...

  • Quantum model simulation of complete S[sub 0]→S[sub 1] population transfer by means of intense laser pulses with opposite chirp. Manz, J.; Naundorf, H.; Yamashita, K.; Zhao, Y. // Journal of Chemical Physics;11/22/2000, Vol. 113 Issue 20 

    The effects of short (0.5-2 ps) chirped laser pulses on the vibrational population transfer from the electronic ground state S[sub 0] to the excited state S[sub 1] are investigated via numerical simulations of the wave packet dynamics. It is demonstrated for a model system that both positively...

  • Parametric excitation of plasma waves by counter-propagating laser beams detuned by 2ω[sub p]. Shvets, Gennady // AIP Conference Proceedings;2001, Vol. 569 Issue 1, p195 

    Short and long wavelength plasma waves can become strongly coupled in the presence of two counter-propagating laser pulses detuned by twice the cold plasma frequency ω[sub p]. This coupling leads to the exponential amplification of the plasma waves at a rate proportional to the product of...

  • Ablation with a single micropatterned KrF laser pulse: quantitative evidence of transient liquid microflow driven by the plume pressure gradient at the surface of polyesters. Weisbuch, F.; Tokarev, V.N.; Lazare, S.; Débarre, D. // Applied Physics A: Materials Science & Processing;2003, Vol. 76 Issue 4, p613 

    A microscopic flow of a transient liquid film produced by KrF laser ablation is evidenced on targets of PET and PEN. Experiments were done by using single pulses of the excimer laser beam micropatterned with the aid of submicron projection optics and grating masks. The samples of various...

  • Study of opto-mechanical characteristics of interaction of ultrashort laser pulses with polymer materials. Loktionov, E.; Ovchinnikov, A.; Protasov, Yu.; Sitnikov, D. // Optics & Spectroscopy;Apr2012, Vol. 112 Issue 4, p631 

    The opto-mechanical characteristics, such as the specific mechanical recoil momentum, the specific impulse, and the energy efficiency, of the laser ablation of flat polymer targets ((CF), (CHO)) have been determined experimentally for the first time for the case of excitation with femtosecond...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

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

Try another library?
Sign out of this library

Other Topics