486 citations · 1.1k across the 19 of their papers we have counts for
19 papers
Continuous-wave coherent Raman spectroscopy for improving the accuracy of Raman shifts
Hugo Kerdoncuff, Mikael Lassen, Jan C. Petersen
Raman spectroscopy is an appealing technique that probes molecular vibrations in a wide variety of materials with virtually no sample preparation. However, accurate and reliable Ra…
Simple and robust speckle detection method for fire and heat detection in harsh environments
Charles N. Christensen, Yevgen Zainchkovskyy, Salvador Barrera-Figueroa +8
Standard laser based fire detection systems are often based on measuring variation of optical signal amplitude. However, mechanical noise interference and loss from dust and steam…
Versatile photoacoustic spectrometer based on a mid-infrared pulsed optical parametric oscillator
Laurent Lamard, David Balslev-Harder, Andre Peremans +2
We demonstrate the usefulness of a nanosecond pulsed single-mode mid-infrared (MIR) optical parametric oscillator (OPO) for Photoacoustic (PA) spectroscopic measurements. The maxim…
Designing and experimental verification of a photoacoustic flow sensor using computational fluid dynamics
Mikael Lassen, David Balslev-Harder, Anders Brusch +3
A photoacoustic (PA) sensor for fast and real-time gas sensing is demonstrated. The PA sensor is a standalone system controlled by a Field-Programmable Gate Array (FPGA). The PA ce…
Photoacoustic spectroscopy of NO using a mid-infrared pulsed optical parametric oscillator as light source
Mikael Lassen, Laurent Lamard, David Balslev-Harder +2
A photoacoustic (PA) sensor for spectroscopic measurements of NO-N at ambient pressure and temperature is demonstrated. The PA sensor is pumped resonantly by a nanosecond p…
Quartz-enhanced photoacoustic spectroscopy as a platform for non-invasive trace gas analyser targeting breath analysis
Jan C. Petersen, Laurent Lamard, Yuyang Feng +3
An innovative and novel quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor for highly sensitive and selective breath gas analysis is introduced. The QEPAS sensor consists of…