Enhancement cavities for few-cycle pulses

We address the challenge of increasing the bandwidth of high-finesse femtosecond enhancement cavities and demonstrate a broad spectrum spanning 1800  cm (195 nm) at -10  dB around a central wavelength of 1050 nm in an EC with an average finesse exceeding 300. This will benefit a host of spectroscopi...

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Bibliographic Details
Published in:Optics letters 2017-01, Vol.42 (2), p.271-274
Main Authors: Lilienfein, N, Hofer, C, Holzberger, S, Matzer, C, Zimmermann, P, Trubetskov, M, Pervak, V, Pupeza, I
Format: Article
Language:English
Subjects:
Absorption spectroscopy
Attosecond pulses
Femtosecond
Gating and risering
Harmonic generations
Holes
Spectroscopy
Wavelengths
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Summary:We address the challenge of increasing the bandwidth of high-finesse femtosecond enhancement cavities and demonstrate a broad spectrum spanning 1800  cm (195 nm) at -10  dB around a central wavelength of 1050 nm in an EC with an average finesse exceeding 300. This will benefit a host of spectroscopic applications, including transient absorption spectroscopy, direct frequency comb spectroscopy, and Raman spectroscopy. The pulse circulating in the EC is composed of only 5.4 optical cycles, at a kilowatt-level average power. Together with a suitable gating technique, this paves the way to the efficient generation of multi-megahertz-repetition-rate isolated extreme ultraviolet attosecond pulses via intracavity high-order harmonic generation.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.42.000271