51 citations
- University of CopenhagenDK9 papers
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- Chalmers University of TechnologySE2 papers
- Delft University of TechnologyNL2 papers
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- Beijing University of Posts and TelecommunicationsCN1 paper
- California Institute of TechnologyUS1 paper
- Goethe University FrankfurtDE1 paper
- Institut Laue-LangevinFR1 paper
- National Institute of OpticsIT1 paper
5 papers · 1 filter
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…
Differential high-resolution stimulated CW Raman spectroscopy of hydrogen in a hollow-core fiber
Philip G. Westergaard, Mikael Lassen, Jan C. Petersen
We demonstrate sensitive high-resolution stimulated Raman measurements of hydrogen using a hollow-core photonic crystal fiber (HC-PCF). The Raman transition is pumped by a narrow l…
Fast Characterization of Moving Samples with Nano-Textured Surfaces
Morten Hannibal Madsen, Poul-Erik Hansen, Maksim Zalkovskij +2
We characterize nano-textured surfaces by optical diffraction techniques using an adapted commercial light microscope with two detectors, a CCD camera and a spectrometer. The acqui…
Phase-Sensitive Noise Suppression in a Photoacoustic Sensor based on Acoustic Circular Membrane Modes
Mikael Lassen, Anders Brusch, David Balslev-Harder +1
A photoacoustic (PA) sensor based on higher order acoustic modes is demonstrated. The PA sensor is designed to enhance the gas-detection performance and simultaneously suppress amb…
A versatile integrating sphere based photoacoustic sensor for trace gas monitoring
Mikael Lassen, David Balslev-Clausen, Anders Brusch +1
A compact versatile photoacoustic (PA) sensor for trace gas detection is reported. The sensor is based on an integrating sphere as the PA absorption cell with an organ pipe tube at…