Continuously tunable ultra broadband terahertz generation implemented with 1.2 μm NIR pumping of GaSe

Hikari Dezaki; Tadao Tanabe; Yutaka Oyama

doi:10.2320/jinstmet.75.315

Continuously tunable ultra broadband terahertz generation implemented with 1.2 μm NIR pumping of GaSe

Hikari Dezaki, Tadao Tanabe, Yutaka Oyama

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

2 Citations (Scopus)

Abstract

This paper presents the characteristics of 1.2 Jim-laser pumped wide frequency tunable terahertz (THz) light source based on difference frequency generation (DFG) with an excitation of phonon-polariton in gallium selenide (GaSe) crystal. The pump and signal lasers are 1.2 μm Cr: Forsterite lasers as a novel frequency. The frequency can be tuned by changing wavelength of signal laser and incidence angle to GaSe crystal. The collinear phase matching conditions of generating terahertz wave in this system are shown. The tuning range of the THz-wave frequency covers from 0.3 THz to 4.8 THz (type oee phase matching) and 8.3 THz to 10.2 THz (type eoo phase matching). The maximum conversion ratio is ∼10^-6 (J^-1), which is about 3 orders in magnitude larger than that of gallium phosphide (GaP) crystal.

Original language	English
Pages (from-to)	315-319
Number of pages	5
Journal	Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume	75
Issue number	5
DOIs	https://doi.org/10.2320/jinstmet.75.315
Publication status	Published - 2011 May
Externally published	Yes

Keywords

Gallium selenide
Nonlinear optical effect
Phonon polariton
Terahertz wave

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

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10.2320/jinstmet.75.315

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title = "Continuously tunable ultra broadband terahertz generation implemented with 1.2 μm NIR pumping of GaSe",

abstract = "This paper presents the characteristics of 1.2 Jim-laser pumped wide frequency tunable terahertz (THz) light source based on difference frequency generation (DFG) with an excitation of phonon-polariton in gallium selenide (GaSe) crystal. The pump and signal lasers are 1.2 μm Cr: Forsterite lasers as a novel frequency. The frequency can be tuned by changing wavelength of signal laser and incidence angle to GaSe crystal. The collinear phase matching conditions of generating terahertz wave in this system are shown. The tuning range of the THz-wave frequency covers from 0.3 THz to 4.8 THz (type oee phase matching) and 8.3 THz to 10.2 THz (type eoo phase matching). The maximum conversion ratio is ∼10-6 (J-1), which is about 3 orders in magnitude larger than that of gallium phosphide (GaP) crystal.",

keywords = "Gallium selenide, Nonlinear optical effect, Phonon polariton, Terahertz wave",

author = "Hikari Dezaki and Tadao Tanabe and Yutaka Oyama",

year = "2011",

month = may,

doi = "10.2320/jinstmet.75.315",

language = "English",

volume = "75",

pages = "315--319",

journal = "Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals",

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T1 - Continuously tunable ultra broadband terahertz generation implemented with 1.2 μm NIR pumping of GaSe

AU - Dezaki, Hikari

AU - Tanabe, Tadao

AU - Oyama, Yutaka

PY - 2011/5

Y1 - 2011/5

N2 - This paper presents the characteristics of 1.2 Jim-laser pumped wide frequency tunable terahertz (THz) light source based on difference frequency generation (DFG) with an excitation of phonon-polariton in gallium selenide (GaSe) crystal. The pump and signal lasers are 1.2 μm Cr: Forsterite lasers as a novel frequency. The frequency can be tuned by changing wavelength of signal laser and incidence angle to GaSe crystal. The collinear phase matching conditions of generating terahertz wave in this system are shown. The tuning range of the THz-wave frequency covers from 0.3 THz to 4.8 THz (type oee phase matching) and 8.3 THz to 10.2 THz (type eoo phase matching). The maximum conversion ratio is ∼10-6 (J-1), which is about 3 orders in magnitude larger than that of gallium phosphide (GaP) crystal.

AB - This paper presents the characteristics of 1.2 Jim-laser pumped wide frequency tunable terahertz (THz) light source based on difference frequency generation (DFG) with an excitation of phonon-polariton in gallium selenide (GaSe) crystal. The pump and signal lasers are 1.2 μm Cr: Forsterite lasers as a novel frequency. The frequency can be tuned by changing wavelength of signal laser and incidence angle to GaSe crystal. The collinear phase matching conditions of generating terahertz wave in this system are shown. The tuning range of the THz-wave frequency covers from 0.3 THz to 4.8 THz (type oee phase matching) and 8.3 THz to 10.2 THz (type eoo phase matching). The maximum conversion ratio is ∼10-6 (J-1), which is about 3 orders in magnitude larger than that of gallium phosphide (GaP) crystal.

KW - Gallium selenide

KW - Nonlinear optical effect

KW - Phonon polariton

KW - Terahertz wave

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Continuously tunable ultra broadband terahertz generation implemented with 1.2 μm NIR pumping of GaSe

Abstract

Keywords

ASJC Scopus subject areas

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