Spectral filtering of femtosecond laser pulses by interference filters

R. Szipócs, A. Köházi-Kis, P. Apai, E. Finger, A. Euteneuer, M. Hofmann

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Phase properties of optical thin film interference filters are discussed from the aspect of their usage for phaseor free wavelength separation of broadband femtosecond laser pulses. It is shown that both transmissive or reflective interference filters with high contrast ratios exhibit high cubic phase shifts on transmission or reflection, respectively, causing intolerable distortion in the temporal pulse shape. We show, however, that high efficiency wavelength separation of broadband femtosecond laser pulses can be achieved by using low contrast, properly designed reflective optical interference filters directly built into the cavity of the broad spectrum, femtosecond pulse lasers or parametric oscillators. For demonstrative purposes, we implemented the idea for a Kerrlens mode-locked Ti:sapphire laser, and obtained two-color, inherently synchronized, unchirped, femtosecond pulse outputs from a single laser oscillator.

Original languageEnglish
JournalApplied Physics B: Lasers and Optics
Volume70
Issue numberSUPPL. 1
DOIs
Publication statusPublished - 2000

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interference
filters
pulses
lasers
oscillators
broadband
parametric amplifiers
wavelengths
sapphire
phase shift
color
cavities
output
thin films

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Atomic and Molecular Physics, and Optics

Cite this

Spectral filtering of femtosecond laser pulses by interference filters. / Szipócs, R.; Köházi-Kis, A.; Apai, P.; Finger, E.; Euteneuer, A.; Hofmann, M.

In: Applied Physics B: Lasers and Optics, Vol. 70, No. SUPPL. 1, 2000.

Research output: Contribution to journalArticle

Szipócs, R. ; Köházi-Kis, A. ; Apai, P. ; Finger, E. ; Euteneuer, A. ; Hofmann, M. / Spectral filtering of femtosecond laser pulses by interference filters. In: Applied Physics B: Lasers and Optics. 2000 ; Vol. 70, No. SUPPL. 1.
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