DocumentCode :
1826197
Title :
Novel single-atom and quasi phase-matching techniques at short wavelengths
Author :
Bartels, R.A. ; Backus, S. ; Christov, I.P. ; Murnane, M.M. ; Kapteyn, Henry C.
Author_Institution :
Joint Inst. for Lab. Astrophys., Nat. Inst. of Stand. & Technol., Boulder, CO, USA
fYear :
2001
fDate :
11-11 May 2001
Firstpage :
273
Abstract :
Summary form only given. In the visible region of the spectrum, nonlinear conversion of light from one frequency to another is efficient because of phase matching. The phase velocity of the fundamental and nonlinear signal is matched such that the generated nonlinear signal sums coherently throughout the entire interaction region. At visible frequencies, this is accomplished by appropriate orientation of an anisotropic crystal. Alternatively, quasi-phase matching (QPM) techniques, which restrict nonlinear light generation to specific spatial regions, can be used. Both of these techniques rely on propagation effects. In this work, we present four new results. First, we present two new phase matching techniques that can be applied uniquely to extreme nonlinear optics, to upshift light into the XUV using high harmonic generation (HHG). The first uses a type of phase matching that can occur within single atoms. The second demonstrates a new type of QPM in the XUV based on amplitude modulation. We also show that these new techniques require an electron trajectory to be adjusted by 25 attoseconds. Finally, we demonstrate excellent agreement between theory and experiment for the first time in learning control of high-order nonlinear processes.
Keywords :
X-ray optics; high-speed optical techniques; optical harmonic generation; optical phase matching; 25 as; XUV; amplitude modulation; anisotropic crystal; electron trajectory; extreme nonlinear optics; high harmonic generation; high-order nonlinear processes; nonlinear frequency conversion; phase matching; propagation effects; quasi phase-matching techniques; quasi-phase matching techniques; short wavelengths; single atoms; single-atom techniques; upshift light; visible region; Amplitude modulation; Anisotropic magnetoresistance; Electrons; Frequency conversion; Nonlinear optics; Optical frequency conversion; Optical harmonic generation; Optical propagation; Signal generators; Ultraviolet sources;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2001. QELS '01. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-663-X
Type :
conf
DOI :
10.1109/QELS.2001.962239
Filename :
962239
Link To Document :
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