Tunable terahertz-wave parametric oscillators using LiNbO3 and MgO: LiNbO3 crystals

Jun Ichi Shikata; Kodo Kawase; Ken Ichi Karino; Tetsuo Taniuchi; Hiromasa Ito

doi:10.1109/22.841956

Tunable terahertz-wave parametric oscillators using LiNbO₃ and MgO: LiNbO₃ crystals

Jun Ichi Shikata, Kodo Kawase, Ken Ichi Karino, Tetsuo Taniuchi, Hiromasa Ito

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

154 Citations (Scopus)

Abstract

Coherent tunable terahertz waves were generated successfully using a terahertz-wave parametric oscillator (TPO) based on laser light scattering from the AI-symmetry polariton mode of LiNbO₃. This method has several advantages, such as continuous and wide tunability (frequency: 0.9-3.1 THz), a relatively high peak power (more than a few milliwatts), and compactness of its system (tabletop size). In addition, the system simply requires a fixed-wavelength pump source, and it is easy to tune. This paper deals with the general performance of this terahertz-wave source using the prism output-coupler method as well as the development and applications of the system. Its tunability, coherency, power, and polarization were measured, and this tunable source was used for terahertz spectroscopy to measure the absorption spectra of LiNbO₃ and water vapor. Also, the use of MgO-doped LiNbO₃ (MgO : LiNbO₃) in our terahertz regime, as well as its far-infrared properties, is described. We found that the MgO : LiNbO₃ TPO is almost five times more efficient than the undoped LiNbO₃ TPO, and we have proven that the enhancement mechanism originates from the enhanced scattering cross section of the lowest A!-symmetry mode in a spontaneous Ram a n experiment.

Original language	English
Pages (from-to)	653-661
Number of pages	9
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	48
Issue number	4 PART 2
DOIs	https://doi.org/10.1109/22.841956
Publication status	Published - 2000
Externally published	Yes

Keywords

Mgo-doped linbo
Nonlinear
Parametric
Spectroscopy
Terahertz
Tunable

ASJC Scopus subject areas

Radiation
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1109/22.841956

Cite this

@article{57794c84de63470a87fb8b5b2ca47f2a,

title = "Tunable terahertz-wave parametric oscillators using LiNbO3 and MgO: LiNbO3 crystals",

abstract = "Coherent tunable terahertz waves were generated successfully using a terahertz-wave parametric oscillator (TPO) based on laser light scattering from the AI-symmetry polariton mode of LiNbO3. This method has several advantages, such as continuous and wide tunability (frequency: 0.9-3.1 THz), a relatively high peak power (more than a few milliwatts), and compactness of its system (tabletop size). In addition, the system simply requires a fixed-wavelength pump source, and it is easy to tune. This paper deals with the general performance of this terahertz-wave source using the prism output-coupler method as well as the development and applications of the system. Its tunability, coherency, power, and polarization were measured, and this tunable source was used for terahertz spectroscopy to measure the absorption spectra of LiNbO3 and water vapor. Also, the use of MgO-doped LiNbO3 (MgO : LiNbO3) in our terahertz regime, as well as its far-infrared properties, is described. We found that the MgO : LiNbO3 TPO is almost five times more efficient than the undoped LiNbO3 TPO, and we have proven that the enhancement mechanism originates from the enhanced scattering cross section of the lowest A!-symmetry mode in a spontaneous Ram a n experiment.",

keywords = "Mgo-doped linbo, Nonlinear, Parametric, Spectroscopy, Terahertz, Tunable",

author = "Shikata, {Jun Ichi} and Kodo Kawase and Karino, {Ken Ichi} and Tetsuo Taniuchi and Hiromasa Ito",

note = "Funding Information: Manuscript received March 1, 1999; revised September 10, 1999. This work was supported in part by the Ministry of Education, Science, and Culture of Japan under a Grant-in-Aid, and by the Research Foundation for Opto-Science and Technology under a grant.",

year = "2000",

doi = "10.1109/22.841956",

language = "English",

volume = "48",

pages = "653--661",

journal = "IRE Transactions on Microwave Theory and Techniques",

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T1 - Tunable terahertz-wave parametric oscillators using LiNbO3 and MgO

T2 - LiNbO3 crystals

AU - Shikata, Jun Ichi

AU - Kawase, Kodo

AU - Karino, Ken Ichi

AU - Taniuchi, Tetsuo

AU - Ito, Hiromasa

N1 - Funding Information: Manuscript received March 1, 1999; revised September 10, 1999. This work was supported in part by the Ministry of Education, Science, and Culture of Japan under a Grant-in-Aid, and by the Research Foundation for Opto-Science and Technology under a grant.

PY - 2000

Y1 - 2000

N2 - Coherent tunable terahertz waves were generated successfully using a terahertz-wave parametric oscillator (TPO) based on laser light scattering from the AI-symmetry polariton mode of LiNbO3. This method has several advantages, such as continuous and wide tunability (frequency: 0.9-3.1 THz), a relatively high peak power (more than a few milliwatts), and compactness of its system (tabletop size). In addition, the system simply requires a fixed-wavelength pump source, and it is easy to tune. This paper deals with the general performance of this terahertz-wave source using the prism output-coupler method as well as the development and applications of the system. Its tunability, coherency, power, and polarization were measured, and this tunable source was used for terahertz spectroscopy to measure the absorption spectra of LiNbO3 and water vapor. Also, the use of MgO-doped LiNbO3 (MgO : LiNbO3) in our terahertz regime, as well as its far-infrared properties, is described. We found that the MgO : LiNbO3 TPO is almost five times more efficient than the undoped LiNbO3 TPO, and we have proven that the enhancement mechanism originates from the enhanced scattering cross section of the lowest A!-symmetry mode in a spontaneous Ram a n experiment.

AB - Coherent tunable terahertz waves were generated successfully using a terahertz-wave parametric oscillator (TPO) based on laser light scattering from the AI-symmetry polariton mode of LiNbO3. This method has several advantages, such as continuous and wide tunability (frequency: 0.9-3.1 THz), a relatively high peak power (more than a few milliwatts), and compactness of its system (tabletop size). In addition, the system simply requires a fixed-wavelength pump source, and it is easy to tune. This paper deals with the general performance of this terahertz-wave source using the prism output-coupler method as well as the development and applications of the system. Its tunability, coherency, power, and polarization were measured, and this tunable source was used for terahertz spectroscopy to measure the absorption spectra of LiNbO3 and water vapor. Also, the use of MgO-doped LiNbO3 (MgO : LiNbO3) in our terahertz regime, as well as its far-infrared properties, is described. We found that the MgO : LiNbO3 TPO is almost five times more efficient than the undoped LiNbO3 TPO, and we have proven that the enhancement mechanism originates from the enhanced scattering cross section of the lowest A!-symmetry mode in a spontaneous Ram a n experiment.

KW - Mgo-doped linbo

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KW - Terahertz

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