486 citations · 1.1k across the 19 of their papers we have counts for
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…
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…
Detection of Vacuum Birefringence with Intense Laser Pulses
Andre N. Luiten, Jesse C. Petersen
We propose a novel technique that promises hope of being the first to directly detect a polarization in the quantum electrodynamic (QED) vacuum. The technique is based upon the use…