244 citations · 836 across the 12 of their papers we have counts for
12 papers
Compact and versatile laser system for polarization-sensitive stimulated Raman spectroscopy
Hugo Kerdoncuff, Mark R. Pollard, Philip G. Westergaard +2
We demonstrate a compact and versatile laser system for stimulated Raman spectroscopy (SRS). The system is based on a tunable continuous wave (CW) probe laser combined with a home-…
All-Optical Detection of Acoustic Pressure Waves with applications in Photo-Acoustic Spectroscopy
Philip G. Westergaard, Mikael Lassen
An all-optical detection method for the detection of acoustic pressure waves is demonstrated. The detection system is based on a stripped (bare) single-mode fiber. The fiber vibrat…
Compact, CO2-stabilized tuneable laser at 2.05 microns
Philip G. Westergaard, Jan W. Thomsen, Martin R. Henriksen +4
We demonstrate a compact fibre-based laser system at 2.05 microns stabilized to a CO2 transition using frequency modulation spectroscopy of a gas-filled hollow-core fibre. The lase…
Non-linear Spectroscopy of Sr Atoms in an Optical Cavity for Laser Stabilization
Bjarke T. R. Christensen, Martin R. Henriksen, Stefan A. Schäffer +4
We study the non-linear interaction of a cold sample of strontium-88 atoms coupled to a single mode of a low finesse optical cavity in the so-called bad cavity limit and investigat…
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…
Observation of Motion Dependent Nonlinear Dispersion with Narrow Linewidth Atoms in an Optical Cavity
Philip G. Westergaard, Bjarke T. R. Christensen, David Tieri +5
As an alternative to state-of-the-art laser frequency stabilisation using ultra-stable cavities, it has been proposed to exploit the non-linear effects from coupling of atoms with…