Time-resolved photothermal breath analysis

Sebastian Wolf; Chiara Lindner; Tobias Trendle; Jens Kießling; Frank Kühnemann

doi:10.1117/12.2650097

15 March 2023 Time-resolved photothermal breath analysis

Sebastian Wolf, Chiara Lindner, Tobias Trendle, Jens Kießling, Frank Kühnemann

Proceedings Volume 12430, Quantum Sensing and Nano Electronics and Photonics XIX; 124300J (2023) https://doi.org/10.1117/12.2650097
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

Infrared laser spectroscopy allows the sensitive detection of gaseous substances. We present a novel gas sensing approach based on photothermal common-path interferometry that offers parts-per-billion sensitivity in microliter volumes: The thermal lens distortion pattern imprinted onto a near-infrared probe beam by the absorption of an infrared pump laser serves as signal for the sensing of low trace substance concentrations in the ppb range. Next to high specific sensitivity, additional focus lies on a tiny measurement volume and a compact overall setup. The advantages of this approach are discussed at the example of real-time measurements of breath N₂O.

Conference Presentation

Citation Download Citation

Sebastian Wolf, Chiara Lindner, Tobias Trendle, Jens Kießling, and Frank Kühnemann "Time-resolved photothermal breath analysis", Proc. SPIE 12430, Quantum Sensing and Nano Electronics and Photonics XIX, 124300J (15 March 2023); https://doi.org/10.1117/12.2650097

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available