Investigating the Long-Term Stability of LiB3O5 (LBO) Frequency Conversion Crystals at 355nm using Photothermal Deflection and LIDT measurements

Autor: Igor Stevanovic, Thomas Gischkat, Carsten Ziolek, Roelene Botha, Heidi Cattaneo, Martin Stahel, Zoltán Balogh-Michels

Publikováno v: Laser Congress 2019 (ASSL, LAC, LS&C).

In order to gain an understanding of the fluctuating long-term stability of LBO crystals, photothermal deflection measurements are used to identify absorbing impurities and defects, followed by multiple pulse LIDT testing to identify possible correla

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9e439f09863fb4445cc973d2760bf6c4
https://doi.org/10.1364/lac.2019.cm2c.4

Photoacoustic detection of oxygen using cantilever enhanced technique

Autor: Toni Laurila, Heidi Cattaneo, Rolf Hernberg

Publikováno v: Applied Physics B. 85:337-341

A tunable diode laser photoacoustic setup based on a recently demonstrated cantilever technique was used for sensitive detection of oxygen. As light sources, we used a distributed feedback (DFB) diode laser and a vertical-cavity surface-emitting (VCS

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e632efe4ed62fb894f85c63cb9b5a24b
https://doi.org/10.1007/s00340-006-2336-5

VCSEL based detection of water vapor near 940nm

Autor: Heidi Cattaneo, Rolf Hernberg, Toni Laurila

Publikováno v: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 60:3269-3275

A vertical-cavity surface-emitting laser (VCSEL) was used to study the absorption spectrum of water vapor in the 940nm region. Measurements were performed in ambient air at room temperature and in a hydrogen-oxygen flame over the temperature range of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b1d0899e98907c166b3f6b6e0c76e74
https://doi.org/10.1016/j.saa.2004.02.025

Diode laser-based photoacoustic spectroscopy with interferometrically-enhanced cantilever detection

Autor: V. Koskinen, Jyrki Kauppinen, Toni Laurila, Rolf Hernberg, Heidi Cattaneo

Publikováno v: Optics express. 13(7)

A novel sensitive approach to detect weak pressure variations has been applied to tunable diode laser-based photoacoustic spectroscopy. The sensing device consists of a miniature silicon cantilever, the deflection of which is detected with a compact

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0f26d11e120d70286aa914f6a3c224f
https://pubmed.ncbi.nlm.nih.gov/19495137

Diode laser based photoacoustic spectroscopy using novel micromechanical cantilever detection

Autor: Toni Laurila, Heidi Cattaneo, Vesa Koskinen, Jyrki Kauppinen, Mikko Heikkinen, Pentti Karioja, Rolf Hernberg

Publikováno v: Laurila, T, Cattaneo, H, Koskinen, V, Kauppinen, J, Heikkinen, M, Karioja, P & Hernberg, R 2005, Diode laser based photoacoustic spectroscopy using novel micromechanical cantilever detection . in Proceedings of the XXXIX Annual Conference of the Finnish Physical Society : March 17-19, 2005, Espoo, Finland . Helsinki University of Technology, Helsinki University of Technology, Laboratory of Physics. Report, no. 229, XXXIX Annual Conference of the Finnish Physical Society, Espoo, Finland, 17/03/05 .
VTT Technical Research Centre of Finland-PURE

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::000bbd5277c6210ecc2d2d4aeab2cd94
https://cris.vtt.fi/en/publications/06fd3e9a-f4bf-487c-9f55-92948b756c53