Mr. Patrik Rajala Profile

Patrik Rajala

at Tampere Univ

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Author

Publications (9)

Proceedings Article | 12 March 2024 Presentation

Cryogenic optical interfacing for scalable quantum computing: analysis of VCSEL operation and thermal profiles as an optical Link

Behzad Namvar, Jukka Viheriälä, Topi Uusitalo, Heikki Virtanen, Patrik Rajala, Sanna Ranta, Teemu Hakkarainen, Antti Tukiainen, Guilhem Almuneau, Mircea Guina

Proceedings Volume PC12880, PC1288006 (2024) https://doi.org/10.1117/12.3001360

KEYWORDS: Thermography, Cryogenics, Vertical cavity surface emitting lasers, Quantum computing, Quantum operations, Quantum communications, Process control, Quantum systems, Quantum processors, Quantum control

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Proceedings Article | 25 May 2022 Presentation

Membrane external-cavity surface-emitting lasers (MECSELs): State of the art in broadband (> 25 THz) tuning and antiresonant gain structure design

Hermann Kahle, Philipp Tatar-Mathes, Patrik Rajala, Mircea Guina

Proceedings Volume PC12141, PC1214109 (2022) https://doi.org/10.1117/12.2632734

KEYWORDS: Terahertz radiation, Structural design, Semiconductor lasers, Vertical cavity surface emitting lasers, Quantum wells, Indium gallium phosphide, Distributed Bragg reflectors, Absorption

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Proceedings Article | 6 May 2022 Paper

Towards red-emitting MECSELs for visible-light OCT applications

Philipp Tatar-Mathes, Hoy-My Phung, Aaron Rogers, Patrik Rajala, Sanna Ranta, Hermann Kahle, Mircea Guina

Proceedings Volume 12170, 1217003 (2022) https://doi.org/10.1117/12.2592919

KEYWORDS: Optical coherence tomography, Light sources, Quantum wells, Visible radiation, Silicon carbide, Image processing, Diamond, Semiconductors, Semiconductor lasers, Reflectivity

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Proceedings Article | 1 April 2022 Presentation

MECSELs with a non-resonant sub-cavity design

Philipp Tatar-Mathes, Hoy-My Phung, Aaron Rogers, Patrik Rajala, Sanna Ranta, Hermann Kahle, Mircea Guina

Proceedings Volume PC11984, PC1198408 (2022) https://doi.org/10.1117/12.2610633

KEYWORDS: Semiconductors, Heterojunctions, Wavelength tuning, Silicon carbide, Semiconductor lasers, Reflectors, Quantum wells, Optical microcavities, Laser resonators, Indium gallium phosphide

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Proceedings Article | 4 March 2022 Presentation + Paper

Design and characterization of MECSELs for widely tunable (>25 THz) continuous wave operation

Patrik Rajala, Philipp Tatar-Mathes, Hoy-My Phung, Jesse Koskinen, Sanna Ranta, Mircea Guina, Hermann Kahle

Proceedings Volume 11984, 1198404 (2022) https://doi.org/10.1117/12.2610649

KEYWORDS: Quantum wells, Mirrors, Semiconductor lasers, Terahertz radiation, Calibration, Digital signal processing, Silicon carbide, Polarization, Continuous wave operation, Structural design

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Proceedings Article | 4 March 2022 Presentation + Paper

Thermal behavior and management of membrane external-cavity surface-emitting lasers (MECSELs)

Hoy-My Phung, Philipp Tatar-Mathes, Aaron Rogers, Patrik Rajala, Sanna Ranta, Hermann Kahle, Mircea Guina

Proceedings Volume 11984, 1198402 (2022) https://doi.org/10.1117/12.2610644

KEYWORDS: Silicon carbide, Diamond, Digital signal processing, Sapphire, Finite element methods, Optical simulations, Absorption, Semiconductor lasers, Quantum wells, Optical pumping

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Proceedings Article | 5 March 2021 Presentation

Membrane external-cavity surface-emitting lasers (MECSELs) with broadband gain in the 9XX to 10XX nm spectral range

Hermann Kahle, Hoy-My Phung, Philipp Tatar-Mathes, Sanna Ranta, Patrik Rajala, Mircea Guina

Proceedings Volume 11704, 117040E (2021) https://doi.org/10.1117/12.2577563

KEYWORDS: Semiconductor lasers, Semiconductors, Quantum wells, Mirrors, Laser systems engineering, Distributed Bragg reflectors

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Proceedings Article | 2 March 2020 Presentation + Paper

A membrane external-cavity surface-emitting laser (MECSEL) with emission around 825 nm

Hoy-My Phung, Hermann Kahle, Jussi-Pekka Penttinen, Patrik Rajala, Sanna Ranta, Mircea Guina

Proceedings Volume 11263, 112630H (2020) https://doi.org/10.1117/12.2545980

KEYWORDS: Semiconductor lasers, Thermal effects, Semiconductors, Silicon carbide, Mirrors, Resistance, High power lasers

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Proceedings Article | 5 March 2019 Presentation + Paper

MECSELs with direct emission in the 760 nm to 810 nm spectral range: a single- and double-side pumping comparison and high-power continuous-wave operation

Hermann Kahle, Jussi-Pekka Penttinen, Hoy-My Phung, Patrik Rajala, Antti Tukiainen, Sanna Ranta, Mircea Guina

Proceedings Volume 10901, 109010D (2019) https://doi.org/10.1117/12.2512111

KEYWORDS: Digital signal processing, Silicon carbide, Quantum wells, Sapphire, Aluminum, Resistance, Semiconductors, Semiconductor lasers, Gallium arsenide, Absorption

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Showing 5 of 9 publications

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