Spectral chracterization of fully phase matched high harmonics generated in a hollow waveguide for free electron laser seeding

Author

Ardana-Lamas, F. ; Trisorio, A. ; Lambert, G. ; Vodungbo, B. ; Malka, V. ; Zeitoun, P. ; Hauri, C.P.

Author_Institution

Paul Scherrer Inst., Villigen, Switzerland

fYear

2013

fDate

12-16 May 2013

Firstpage

1

Lastpage

1

Abstract

In this work, we present a bright and fully phase matched high harmonic (HH) source for seeding an FEL in the soft X-ray spectral region around 120 eV, being significantly shorter than what has been demonstrated up to now (40 nm ). Full phase matching of the generated harmonics is achieved using an unmodulated hollow waveguide. The waveguide consists on an assembly of two sapphire blocks where a semi-cylindrical groove of 100 μm radius has been drilled. The generated harmonics are characterized with a grating based spectrometer.

Keywords

diffraction gratings; free electron lasers; optical harmonic generation; optical phase matching; optical waveguides; sapphire; Al₂O₃; FEL seeding; free electron laser seeding; fully phase matched high harmonic generation; fully phase matched high harmonic source; grating based spectrometer; radius 100 mum; sapphire blocks; semicylindrical groove; soft X-ray spectral region; spectral characterization; unmodulated hollow waveguide; Free electron lasers; Harmonic analysis; Hollow waveguides; Optical frequency conversion; Waveguide lasers; X-rays;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Europe (CLEO EUROPE/IQEC), 2013 Conference on and International Quantum Electronics Conference

Conference_Location

Munich

Print_ISBN

978-1-4799-0593-5

Type

conf

DOI

10.1109/CLEOE-IQEC.2013.6801157

Filename

6801157