Abstract
We demonstrate experimentally that bright and nearly collimated radiation can be efficiently generated in air pumped by an intense femtosecond Bessel beam. We show that this nonlinear conversion process is driven by the rotational Raman response of air molecules. Under optimum conditions, the conversion efficiency from the Bessel pump into the on-axis propagating beam exceeds 15% and is limited by the onset of intensity clamping and plasma refraction on the beam axis. Our experimental findings are in excellent agreement with numerical simulations based on the standard model for the ultrafast nonlinear response of air.
| Original language | English (US) |
|---|---|
| Article number | 053805 |
| Journal | Physical Review A |
| Volume | 89 |
| Issue number | 5 |
| DOIs | |
| State | Published - May 5 2014 |
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ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
Cite this
Raman conversion in intense femtosecond Bessel beams in air. / Scheller, Maik A; Chen, Xi; Ariunbold, Gombojav O.; Born, Norman; Moloney, Jerome V; Kolesik, Miroslav; Polynkin, Pavel G.
In: Physical Review A, Vol. 89, No. 5, 053805, 05.05.2014.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Raman conversion in intense femtosecond Bessel beams in air
AU - Scheller, Maik A
AU - Chen, Xi
AU - Ariunbold, Gombojav O.
AU - Born, Norman
AU - Moloney, Jerome V
AU - Kolesik, Miroslav
AU - Polynkin, Pavel G
PY - 2014/5/5
Y1 - 2014/5/5
N2 - We demonstrate experimentally that bright and nearly collimated radiation can be efficiently generated in air pumped by an intense femtosecond Bessel beam. We show that this nonlinear conversion process is driven by the rotational Raman response of air molecules. Under optimum conditions, the conversion efficiency from the Bessel pump into the on-axis propagating beam exceeds 15% and is limited by the onset of intensity clamping and plasma refraction on the beam axis. Our experimental findings are in excellent agreement with numerical simulations based on the standard model for the ultrafast nonlinear response of air.
AB - We demonstrate experimentally that bright and nearly collimated radiation can be efficiently generated in air pumped by an intense femtosecond Bessel beam. We show that this nonlinear conversion process is driven by the rotational Raman response of air molecules. Under optimum conditions, the conversion efficiency from the Bessel pump into the on-axis propagating beam exceeds 15% and is limited by the onset of intensity clamping and plasma refraction on the beam axis. Our experimental findings are in excellent agreement with numerical simulations based on the standard model for the ultrafast nonlinear response of air.
UR - http://www.scopus.com/inward/record.url?scp=84899877066&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84899877066&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.89.053805
DO - 10.1103/PhysRevA.89.053805
M3 - Article
AN - SCOPUS:84899877066
VL - 89
JO - Physical Review A
JF - Physical Review A
SN - 2469-9926
IS - 5
M1 - 053805
ER -