Tunable 3-6 THz polariton laser exceeding 0.1 mW average output power based on crystalline RbTiOPO4

Tiago Almeida Ortega; Helen M. Pask; David J. Spence; Andrew J. Lee

doi:10.1109/JSTQE.2018.2810380

Tunable 3-6 THz polariton laser exceeding 0.1 mW average output power based on crystalline RbTiOPO₄

Tiago Almeida Ortega, Helen M. Pask, David J. Spence, Andrew J. Lee

MQ Photonics Research Centre

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

18 Citations (Scopus)

Abstract

We report a diode-pumped, intracavity THz laser source based on stimulated polariton scattering in crystalline RbTiOPO₄ using a surface-emitting configuration. The system was continuously tunable in four regions, from 3.05 - 3.16 THz, from 3.50 - 4.25 THz, from 4.57 - 4.75 THz and from 5.40 - 5.98 THz. The laser delivered 124.7 μW average output power at 4.10 THz for only 6.0 W diode pump power at 808 nm, corresponding to a diode-to-THz conversion efficiency of 2.1x10^-5. The horizontal and vertical beam quality parameters were M²_H < 1.6 and M²_V < 1.1 and the linewidth of the terahertz field was 28 GHz at 4.10 THz. The results demonstrate that the surface-emitting configuration is a very efficient technique to produce high power THz laser sources with frequency-tunable output suitable for real world applications.

Original language	English
Article number	5100806
Pages (from-to)	1-6
Number of pages	6
Journal	IEEE Journal on Selected Topics in Quantum Electronics
Volume	24
Issue number	5
DOIs	https://doi.org/10.1109/JSTQE.2018.2810380
Publication status	Published - 1 Sept 2018

Keywords

crystals
laser excitation
nonlinear optics
parametric devices
power generation
power lasers
Raman scattering
resonators
solid-state lasers
stimulated polariton scattering (SPS)
surface emitting lasers
terahertz lasers

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10.1109/JSTQE.2018.2810380

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title = "Tunable 3-6 THz polariton laser exceeding 0.1 mW average output power based on crystalline RbTiOPO4",

abstract = "We report a diode-pumped, intracavity THz laser source based on stimulated polariton scattering in crystalline RbTiOPO4 using a surface-emitting configuration. The system was continuously tunable in four regions, from 3.05 - 3.16 THz, from 3.50 - 4.25 THz, from 4.57 - 4.75 THz and from 5.40 - 5.98 THz. The laser delivered 124.7 μW average output power at 4.10 THz for only 6.0 W diode pump power at 808 nm, corresponding to a diode-to-THz conversion efficiency of 2.1x10-5. The horizontal and vertical beam quality parameters were M2H < 1.6 and M2V < 1.1 and the linewidth of the terahertz field was 28 GHz at 4.10 THz. The results demonstrate that the surface-emitting configuration is a very efficient technique to produce high power THz laser sources with frequency-tunable output suitable for real world applications.",

keywords = "crystals, laser excitation, nonlinear optics, parametric devices, power generation, power lasers, Raman scattering, resonators, solid-state lasers, stimulated polariton scattering (SPS), surface emitting lasers, terahertz lasers",

author = "{Almeida Ortega}, Tiago and Pask, {Helen M.} and Spence, {David J.} and Lee, {Andrew J.}",

year = "2018",

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doi = "10.1109/JSTQE.2018.2810380",

language = "English",

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journal = "IEEE Journal on Selected Topics in Quantum Electronics",

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T1 - Tunable 3-6 THz polariton laser exceeding 0.1 mW average output power based on crystalline RbTiOPO4

AU - Almeida Ortega, Tiago

AU - Pask, Helen M.

AU - Spence, David J.

AU - Lee, Andrew J.

PY - 2018/9/1

Y1 - 2018/9/1

N2 - We report a diode-pumped, intracavity THz laser source based on stimulated polariton scattering in crystalline RbTiOPO4 using a surface-emitting configuration. The system was continuously tunable in four regions, from 3.05 - 3.16 THz, from 3.50 - 4.25 THz, from 4.57 - 4.75 THz and from 5.40 - 5.98 THz. The laser delivered 124.7 μW average output power at 4.10 THz for only 6.0 W diode pump power at 808 nm, corresponding to a diode-to-THz conversion efficiency of 2.1x10-5. The horizontal and vertical beam quality parameters were M2H < 1.6 and M2V < 1.1 and the linewidth of the terahertz field was 28 GHz at 4.10 THz. The results demonstrate that the surface-emitting configuration is a very efficient technique to produce high power THz laser sources with frequency-tunable output suitable for real world applications.

AB - We report a diode-pumped, intracavity THz laser source based on stimulated polariton scattering in crystalline RbTiOPO4 using a surface-emitting configuration. The system was continuously tunable in four regions, from 3.05 - 3.16 THz, from 3.50 - 4.25 THz, from 4.57 - 4.75 THz and from 5.40 - 5.98 THz. The laser delivered 124.7 μW average output power at 4.10 THz for only 6.0 W diode pump power at 808 nm, corresponding to a diode-to-THz conversion efficiency of 2.1x10-5. The horizontal and vertical beam quality parameters were M2H < 1.6 and M2V < 1.1 and the linewidth of the terahertz field was 28 GHz at 4.10 THz. The results demonstrate that the surface-emitting configuration is a very efficient technique to produce high power THz laser sources with frequency-tunable output suitable for real world applications.

KW - crystals

KW - laser excitation

KW - nonlinear optics

KW - parametric devices

KW - power generation

KW - power lasers

KW - Raman scattering

KW - resonators

KW - solid-state lasers

KW - stimulated polariton scattering (SPS)

KW - surface emitting lasers

KW - terahertz lasers

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JO - IEEE Journal on Selected Topics in Quantum Electronics

JF - IEEE Journal on Selected Topics in Quantum Electronics

IS - 5

M1 - 5100806

ER -

Tunable 3-6 THz polariton laser exceeding 0.1 mW average output power based on crystalline RbTiOPO₄

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