Generation and control of ultrafast pulse trains for quasi-phase-matching high-harmonic generation


Autoria(s): Robinson, T.; O'Keeffe, K.; Zepf, Matthew; Dromey, Brendan; Hooker, S.M.
Data(s)

01/04/2010

Resumo

Two techniques are demonstrated to produce ultrashort pulse trains capable of quasi-phase-matching high-harmonic generation. The first technique makes use of an array of birefringent crystals and is shown to generate high-contrast pulse trains with constant pulse spacing. The second technique employs a grating-pair stretcher, a multiple-order wave plate, and a linear polarizer. Trains of up to 100 pulses are demonstrated with this technique, with almost constant inter-pulse separation. It is shown that arbitrary pulse separation can be achieved by introducing the appropriate dispersion. This principle is demonstrated by using an acousto-optic programmable dispersive filter to introduce third-and fourth-order dispersions leading to a linear and quadratic variation of the separation of pulses through the train. Chirped-pulse trains of this type may be used to quasi-phase-match high-harmonic generation in situations where the coherence length varies through the medium. (C) 2010 Optical Society of America

Identificador

http://pure.qub.ac.uk/portal/en/publications/generation-and-control-of-ultrafast-pulse-trains-for-quasiphasematching-highharmonic-generation(a94f3da9-a184-49c6-9582-24ca3d0a0a8a).html

Idioma(s)

eng

Direitos

info:eu-repo/semantics/restrictedAccess

Fonte

Robinson , T , O'Keeffe , K , Zepf , M , Dromey , B & Hooker , S M 2010 , ' Generation and control of ultrafast pulse trains for quasi-phase-matching high-harmonic generation ' JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS , vol 27 , no. 4 , pp. 763-772 .

Palavras-Chave #/dk/atira/pure/subjectarea/asjc/3100/3107 #Atomic and Molecular Physics, and Optics #/dk/atira/pure/subjectarea/asjc/3100/3109 #Statistical and Nonlinear Physics
Tipo

article