Dr. Janis Alnis Profile

Dr. Janis Alnis

at Univ of Latvia

SPIE Involvement:

Author

Publications (13)

Proceedings Article | 5 June 2023 Presentation + Paper

Whispering gallery mode resonator surface functionalization for active applications

Inga Brice, Vyacheslav Kim, Armands Ostrovskis, Arvīds Sedulis, Toms Salgals, Sandis Spolitis, Vjaceslavs Bobrovs, Janis Alnis, Rashid Ganeev

Proceedings Volume 12569, 125690C (2023) https://doi.org/10.1117/12.2664936

KEYWORDS: Whispering gallery modes, Microspheres, Resonators, Microresonators, Quantum dots, Optical resonators, Erbium, Third harmonic generation, Laser resonators, Coating

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Proceedings Article | 31 May 2023 Paper

Integrated SU-8 ring resonator for rapid humidity sensing

Lase Milgrave, Janis Alnis, Arturs Bundulis, Aigars Atvars

Proceedings Volume 12572, 1257217 (2023) https://doi.org/10.1117/12.2665411

KEYWORDS: Humidity, Optical resonators, Whispering gallery modes, Waveguides, Sensors, Refractive index, Gases, Relative humidity

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Proceedings Article | 17 May 2022 Presentation + Paper

Selectivity of glycerol droplet microresonator humidity sensor

Lase Milgrave, Pauls Kristaps, Inga Brice, Janis Alnis, Aigars Atvars

Proceedings Volume 12139, 121390F (2022) https://doi.org/10.1117/12.2621124

KEYWORDS: Sensors, Humidity, Resonators, Gases, Liquids, Microresonators, Optical spheres, Data analysis

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Proceedings Article | 5 March 2021 Poster + Presentation + Paper

Mode family analysis for PMMA WGM micro resonators using spot intensity changes

Roberts Berķis, Janis Alnis, Inga Brice, Aigars Atvars, Kristians Draguns, Kārlis Grundšteins, Pauls Kristaps Reinis

Proceedings Volume 11672, 1167217 (2021) https://doi.org/10.1117/12.2577025

KEYWORDS: Temperature metrology, Resonators, Quality measurement, Laser resonators, Microresonators, Optical spheres, Image analysis, Electromagnetism, Thermal modeling

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Proceedings Article | 5 March 2021 Poster + Paper

Computer modelling of WGM microresonators with a zinc oxide nanolayer using COMSOL multiphysics software

K. Draguns, I. Brice, A. Atvars, J. Alnis

Proceedings Volume 11672, 1167216 (2021) https://doi.org/10.1117/12.2578210

KEYWORDS: Microresonators, Zinc oxide, Modeling, Computer simulations, Thin film coatings, Spherical lenses, Sensors, Resonators, Refractive index

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Proceedings Article | 5 March 2021 Poster + Presentation + Paper

Frequency comb generation in whispering gallery mode silica microsphere resonators

Inga Brice, Karlis Grundsteins, Arvids Sedulis, Toms Salgals, Sandis Spolitis, Vjaceslavs Bobrovs, Janis Alnis

Proceedings Volume 11672, 1167213 (2021) https://doi.org/10.1117/12.2577148

KEYWORDS: Frequency combs, Resonators, Silica, Prisms, Single mode fibers, Precision optics, Optical testing, Optical metrology, Optical communications

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Proceedings Article | 3 September 2019 Paper

Whispering gallery mode resonators coated with Au nanoparticles

Inga Brice, Karlis Grundsteins, Aigars Atvars, Janis Alnis, Roman Viter

Proceedings Volume 11089, 110891T (2019) https://doi.org/10.1117/12.2528677

KEYWORDS: Resonators, Gold, Nanoparticles, Coating, Sensors, Glucose, Liquids, Silica, Evanescent wave coupling

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Proceedings Article | 7 December 2017 Paper

Development of optical WGM resonators for biosensors

I. Brice, A. Pirktina, A. Ubele, K. Grundsteins, A. Atvars, R. Viter, J. Alnis

Proceedings Volume 10592, 105920B (2017) https://doi.org/10.1117/12.2297551

KEYWORDS: Resonators, Zinc oxide, Nanorods, Coating, Biosensors, Microresonators, Nanoparticles, Oxygen, Particles

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Proceedings Article | 7 December 2017 Paper

First results of cavity ring down signals from exhaled air

G. Revalde, K. Grundšteins, J. Alnis, A. Skudra

Proceedings Volume 10592, 1059209 (2017) https://doi.org/10.1117/12.2297277

KEYWORDS: Spectroscopy, Absorption, Ultraviolet radiation, Calibration, Mirrors, Nd:YAG lasers, Diagnostics, Lung cancer, Blood, Resonators

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Proceedings Article | 7 December 2017 Paper

Cavity ring down spectrometry for disease diagnostics using exhaled air

G. Revalde, K. Grundšteins, J. Alnis, A. Skudra

Proceedings Volume 10592, 1059208 (2017) https://doi.org/10.1117/12.2297126

KEYWORDS: Spectroscopy, Mirrors, Calibration, Diagnostics, Absorption, Reflectivity, Resonators, Nitrogen, Mass spectrometry, Pulsed laser operation

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Proceedings Article | 22 October 2014 Paper

Optical diagnostic method for benzene detection in air

J. Alnis, G. Revalde, A. Vrublevskis, Z. Gavare

Proceedings Volume 9421, 94210E (2014) https://doi.org/10.1117/12.2083915

KEYWORDS: Absorption, Mercury, Spectroscopy, Lamps, Light sources, Sensors, Optical diagnostics, Polarization, Modulators, Photodetectors

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Proceedings Article | 8 September 2011 Paper

Precision spectroscopy on atomic hydrogen

Christian Parthey, Arthur Matveev, Janis Alnis, Axel Beyer, Randolf Pohl, Katharina Predehl, Thomas Udem, Nikolai Kolachevsky, Michel Abgrall, Daniele Rovera, Christophe Salomon, Philippe Laurent, Theodor Hänsch

Proceedings Volume 8132, 813202 (2011) https://doi.org/10.1117/12.893694

KEYWORDS: Doppler effect, Hydrogen, Chemical species, Spectroscopy, Velocity measurements, Bragg cells, Magnetism, Quenching (fluorescence), Monte Carlo methods, Laser spectroscopy

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Proceedings Article | 9 July 2007 Paper

Ionization detection scheme for 1s-2s spectroscopy in atomic hydrogen

A. Matveev, N. Kolachevsky, J. Alnis, T. Hänsch

Proceedings Volume 6727, 67270K (2007) https://doi.org/10.1117/12.752279

KEYWORDS: Ionization, Hydrogen, Chemical species, Spectroscopy, Bragg cells, Doppler effect, Laser stabilization, Phase shift keying, Mirrors, Photons

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Showing 5 of 13 publications

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