Efficient high-order harmonic generation boosted by below-threshold harmonics.

Fernando Brizuela; Christoph Heyl; Piotr Rudawski; David Kroon; Linnea Rading; J M Dahlström; Johan Mauritsson; Per Johnsson; Cord Arnold; Anne L'Huillier

doi:10.1038/srep01410

Efficient high-order harmonic generation boosted by below-threshold harmonics.

Fernando Brizuela, Christoph Heyl, Piotr Rudawski, David Kroon, Linnea Rading, J M Dahlström, Johan Mauritsson, Per Johnsson, Cord Arnold, Anne L'Huillier

Research output: Contribution to journal › Article › peer-review

Abstract

High-order harmonic generation (HHG) in gases has been established as an important technique for the generation of coherent extreme ultraviolet (XUV) pulses at ultrashort time scales. Its main drawback, however, is the low conversion efficiency, setting limits for many applications, such as ultrafast coherent imaging, nonlinear processes in the XUV range, or seeded free electron lasers. Here we introduce a novel scheme based on using below-threshold harmonics, generated in a "seeding cell", to boost the HHG process in a "generation cell", placed further downstream in the focused laser beam. By modifying the fundamental driving field, these low-order harmonics alter the ionization step of the nonlinear HHG process. Our dual-cell scheme enhances the conversion efficiency of HHG, opening the path for the realization of robust intense attosecond XUV sources.

Original language	English
Article number	1410
Journal	Scientific Reports
Volume	3
DOIs	https://doi.org/10.1038/srep01410
Publication status	Published - 2013

Subject classification (UKÄ)

Atom and Molecular Physics and Optics

Access to Document

10.1038/srep01410

Cite this

@article{d9859f0293264bdc8941dc4480ca49b7,

title = "Efficient high-order harmonic generation boosted by below-threshold harmonics.",

abstract = "High-order harmonic generation (HHG) in gases has been established as an important technique for the generation of coherent extreme ultraviolet (XUV) pulses at ultrashort time scales. Its main drawback, however, is the low conversion efficiency, setting limits for many applications, such as ultrafast coherent imaging, nonlinear processes in the XUV range, or seeded free electron lasers. Here we introduce a novel scheme based on using below-threshold harmonics, generated in a {"}seeding cell{"}, to boost the HHG process in a {"}generation cell{"}, placed further downstream in the focused laser beam. By modifying the fundamental driving field, these low-order harmonics alter the ionization step of the nonlinear HHG process. Our dual-cell scheme enhances the conversion efficiency of HHG, opening the path for the realization of robust intense attosecond XUV sources.",

author = "Fernando Brizuela and Christoph Heyl and Piotr Rudawski and David Kroon and Linnea Rading and Dahlstr{\"o}m, \{J M\} and Johan Mauritsson and Per Johnsson and Cord Arnold and Anne L'Huillier",

year = "2013",

doi = "10.1038/srep01410",

language = "English",

volume = "3",

journal = "Scientific Reports",

issn = "2045-2322",

publisher = "Nature Publishing Group",

}

TY - JOUR

T1 - Efficient high-order harmonic generation boosted by below-threshold harmonics.

AU - Brizuela, Fernando

AU - Heyl, Christoph

AU - Rudawski, Piotr

AU - Kroon, David

AU - Rading, Linnea

AU - Dahlström, J M

AU - Mauritsson, Johan

AU - Johnsson, Per

AU - Arnold, Cord

AU - L'Huillier, Anne

PY - 2013

Y1 - 2013

N2 - High-order harmonic generation (HHG) in gases has been established as an important technique for the generation of coherent extreme ultraviolet (XUV) pulses at ultrashort time scales. Its main drawback, however, is the low conversion efficiency, setting limits for many applications, such as ultrafast coherent imaging, nonlinear processes in the XUV range, or seeded free electron lasers. Here we introduce a novel scheme based on using below-threshold harmonics, generated in a "seeding cell", to boost the HHG process in a "generation cell", placed further downstream in the focused laser beam. By modifying the fundamental driving field, these low-order harmonics alter the ionization step of the nonlinear HHG process. Our dual-cell scheme enhances the conversion efficiency of HHG, opening the path for the realization of robust intense attosecond XUV sources.

AB - High-order harmonic generation (HHG) in gases has been established as an important technique for the generation of coherent extreme ultraviolet (XUV) pulses at ultrashort time scales. Its main drawback, however, is the low conversion efficiency, setting limits for many applications, such as ultrafast coherent imaging, nonlinear processes in the XUV range, or seeded free electron lasers. Here we introduce a novel scheme based on using below-threshold harmonics, generated in a "seeding cell", to boost the HHG process in a "generation cell", placed further downstream in the focused laser beam. By modifying the fundamental driving field, these low-order harmonics alter the ionization step of the nonlinear HHG process. Our dual-cell scheme enhances the conversion efficiency of HHG, opening the path for the realization of robust intense attosecond XUV sources.

UR - https://www.scopus.com/pages/publications/84875165419

U2 - 10.1038/srep01410

DO - 10.1038/srep01410

M3 - Article

C2 - 23475106

SN - 2045-2322

VL - 3

JO - Scientific Reports

JF - Scientific Reports

M1 - 1410

ER -

Efficient high-order harmonic generation boosted by below-threshold harmonics.

Abstract

Subject classification (UKÄ)

Access to Document

Other files and links

Fingerprint

An Intense Attosecond Light Source - from Generation to Application

Attosecond interferometry: techniques and spectroscopy

Cite this