Third harmonic generation in double-pulse laser induced air plasma

Lev Nagli; Michael Gaft; Yosef Raichlin

doi:10.1016/j.optcom.2019.03.033

Third harmonic generation in double-pulse laser induced air plasma

Lev Nagli, Michael Gaft, Yosef Raichlin

Department of Physics

Ariel University

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

Abstract

We found a fast hydrodynamic process in air double pulse Laser Induced Plasma (LIP) during the first 50 ns of plasma life. This process leads to strong inhomogeneity in the refractive index of air LIP, disturbance in the Gouy phase shift, and an increase in Third Harmonic Generation (THG). The efficiency of THG strongly depends on the confocal parameter of the focusing beam. The decrease in the focus of the pumping lens, despite the increase in the pump intensity, leads to a decrease in TH intensity. This can be attributed to the change from weak to tight focusing conditions in THG.

Original language	English
Pages (from-to)	63-68
Number of pages	6
Journal	Optics Communications
Volume	443
DOIs	https://doi.org/10.1016/j.optcom.2019.03.033
State	Published - 15 Jul 2019

Keywords

Air laser breakdown
Laser induced plasma
Third harmonic generation

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

Access to Document

10.1016/j.optcom.2019.03.033

Cite this

@article{448b069ed7e04bf0aaea60267f3d930d,

title = "Third harmonic generation in double-pulse laser induced air plasma",

abstract = "We found a fast hydrodynamic process in air double pulse Laser Induced Plasma (LIP) during the first 50 ns of plasma life. This process leads to strong inhomogeneity in the refractive index of air LIP, disturbance in the Gouy phase shift, and an increase in Third Harmonic Generation (THG). The efficiency of THG strongly depends on the confocal parameter of the focusing beam. The decrease in the focus of the pumping lens, despite the increase in the pump intensity, leads to a decrease in TH intensity. This can be attributed to the change from weak to tight focusing conditions in THG.",

keywords = "Air laser breakdown, Laser induced plasma, Third harmonic generation",

author = "Lev Nagli and Michael Gaft and Yosef Raichlin",

note = "Publisher Copyright: {\textcopyright} 2019",

year = "2019",

month = jul,

day = "15",

doi = "10.1016/j.optcom.2019.03.033",

language = "الإنجليزيّة",

volume = "443",

pages = "63--68",

journal = "Optics Communications",

issn = "0030-4018",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Third harmonic generation in double-pulse laser induced air plasma

AU - Nagli, Lev

AU - Gaft, Michael

AU - Raichlin, Yosef

PY - 2019/7/15

Y1 - 2019/7/15

N2 - We found a fast hydrodynamic process in air double pulse Laser Induced Plasma (LIP) during the first 50 ns of plasma life. This process leads to strong inhomogeneity in the refractive index of air LIP, disturbance in the Gouy phase shift, and an increase in Third Harmonic Generation (THG). The efficiency of THG strongly depends on the confocal parameter of the focusing beam. The decrease in the focus of the pumping lens, despite the increase in the pump intensity, leads to a decrease in TH intensity. This can be attributed to the change from weak to tight focusing conditions in THG.

AB - We found a fast hydrodynamic process in air double pulse Laser Induced Plasma (LIP) during the first 50 ns of plasma life. This process leads to strong inhomogeneity in the refractive index of air LIP, disturbance in the Gouy phase shift, and an increase in Third Harmonic Generation (THG). The efficiency of THG strongly depends on the confocal parameter of the focusing beam. The decrease in the focus of the pumping lens, despite the increase in the pump intensity, leads to a decrease in TH intensity. This can be attributed to the change from weak to tight focusing conditions in THG.

KW - Air laser breakdown

KW - Laser induced plasma

KW - Third harmonic generation

UR - http://www.scopus.com/inward/record.url?scp=85062913552&partnerID=8YFLogxK

U2 - 10.1016/j.optcom.2019.03.033

DO - 10.1016/j.optcom.2019.03.033

M3 - مقالة

SN - 0030-4018

VL - 443

SP - 63

EP - 68

JO - Optics Communications

JF - Optics Communications

ER -

Third harmonic generation in double-pulse laser induced air plasma

Abstract

Keywords

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this