Mechanism of Single-Cycle THz Pulse Generation and X-ray Emission: Water-Flow Irradiated by Two Ultra-Short Laser Pulses

Hsin Hui Huang; Saulius Juodkazis; Eugene G. Gamaly; Vladimir T. Tikhonchuk; Koji Hatanaka

doi:10.3390/nano13182505

Mechanism of Single-Cycle THz Pulse Generation and X-ray Emission: Water-Flow Irradiated by Two Ultra-Short Laser Pulses

Hsin Hui Huang, Saulius Juodkazis, Eugene G. Gamaly^*, Vladimir T. Tikhonchuk^*, Koji Hatanaka

^*Corresponding author for this work

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

3 Citations (Scopus)

Abstract

The interaction of two subsequent ultra-short sub-milli-Joule laser pulses with a thin water flow results in an emission of a strong single-cycle THz pulse associated with enhanced soft X-ray emission. In this paper, a chain of processes produced in this interaction is analyzed and compared with other THz generation studies. It is demonstrated that the enhanced THz and X-ray emissions are produced by an energetic electron beam accelerated in the interaction of a main laser pulse with liquid water ejected from the surface by the pre-pulse. This scheme thus provides an efficient laser energy conversion in a THz pulse, avoiding laser self-focusing and filamentation in air.

Original language	English
Article number	2505
Journal	Nanomaterials
Volume	13
Issue number	18
DOIs	https://doi.org/10.3390/nano13182505
Publication status	Published - Sept 2023

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title = "Mechanism of Single-Cycle THz Pulse Generation and X-ray Emission: Water-Flow Irradiated by Two Ultra-Short Laser Pulses",

abstract = "The interaction of two subsequent ultra-short sub-milli-Joule laser pulses with a thin water flow results in an emission of a strong single-cycle THz pulse associated with enhanced soft X-ray emission. In this paper, a chain of processes produced in this interaction is analyzed and compared with other THz generation studies. It is demonstrated that the enhanced THz and X-ray emissions are produced by an energetic electron beam accelerated in the interaction of a main laser pulse with liquid water ejected from the surface by the pre-pulse. This scheme thus provides an efficient laser energy conversion in a THz pulse, avoiding laser self-focusing and filamentation in air.",

keywords = "Bremsstrahlung emission, THz emission, coherent transient radiation, dipole radiation, water ablation",

author = "Huang, {Hsin Hui} and Saulius Juodkazis and Gamaly, {Eugene G.} and Tikhonchuk, {Vladimir T.} and Koji Hatanaka",

note = "Publisher Copyright: {\textcopyright} 2023 by the authors.",

year = "2023",

month = sep,

doi = "10.3390/nano13182505",

language = "English",

volume = "13",

journal = "Nanomaterials",

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publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

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TY - JOUR

T1 - Mechanism of Single-Cycle THz Pulse Generation and X-ray Emission

T2 - Water-Flow Irradiated by Two Ultra-Short Laser Pulses

AU - Huang, Hsin Hui

AU - Juodkazis, Saulius

AU - Gamaly, Eugene G.

AU - Tikhonchuk, Vladimir T.

AU - Hatanaka, Koji

PY - 2023/9

Y1 - 2023/9

N2 - The interaction of two subsequent ultra-short sub-milli-Joule laser pulses with a thin water flow results in an emission of a strong single-cycle THz pulse associated with enhanced soft X-ray emission. In this paper, a chain of processes produced in this interaction is analyzed and compared with other THz generation studies. It is demonstrated that the enhanced THz and X-ray emissions are produced by an energetic electron beam accelerated in the interaction of a main laser pulse with liquid water ejected from the surface by the pre-pulse. This scheme thus provides an efficient laser energy conversion in a THz pulse, avoiding laser self-focusing and filamentation in air.

AB - The interaction of two subsequent ultra-short sub-milli-Joule laser pulses with a thin water flow results in an emission of a strong single-cycle THz pulse associated with enhanced soft X-ray emission. In this paper, a chain of processes produced in this interaction is analyzed and compared with other THz generation studies. It is demonstrated that the enhanced THz and X-ray emissions are produced by an energetic electron beam accelerated in the interaction of a main laser pulse with liquid water ejected from the surface by the pre-pulse. This scheme thus provides an efficient laser energy conversion in a THz pulse, avoiding laser self-focusing and filamentation in air.

KW - Bremsstrahlung emission

KW - THz emission

KW - coherent transient radiation

KW - dipole radiation

KW - water ablation

UR - http://www.scopus.com/inward/record.url?scp=85172783866&partnerID=8YFLogxK

U2 - 10.3390/nano13182505

DO - 10.3390/nano13182505

M3 - Article

SN - 2079-4991

VL - 13

JO - Nanomaterials

JF - Nanomaterials

IS - 18

M1 - 2505

ER -

Mechanism of Single-Cycle THz Pulse Generation and X-ray Emission: Water-Flow Irradiated by Two Ultra-Short Laser Pulses

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