| 1. |
- Dorozynska, Karolina D., et al.
(författare)
-
A single exposure (instantaneous) multispectral microscopy scheme using structured illumination
- 2016
-
Ingår i: Mathematics in Imaging, MATH 2016. - 9781943580156 ; Part F11-MATH 2016
-
Konferensbidrag (refereegranskat)abstract
- We present the initial results from the development of an instantaneous multispectral microscopy technique exploiting spatially modulated light. Fluorescence from two excitation sources is recorded in a single exposure and separated in the Fourier domain.
|
|
| 2. |
- Foltynowicz, Aleksandra, 1981-, et al.
(författare)
-
Cavity-enhanced optical frequency combs spectroscopy in the near- and mid-infrared
- 2016
-
Ingår i: Imaging and applied optics 2016. - : OSA - The Optical Society. - 9781943580156
-
Konferensbidrag (refereegranskat)abstract
- We present the recent developments in high-resolution Fourier transform spectroscopy based on optical frequency combs for precision measurements and combustion diagnostics, and the first implementation of continuous-filtering Vernier spectroscopy in the mid-infrared wavelength range for fast multispecies detection.
|
|
| 3. |
- Hausmaninger, Thomas, 1987-, et al.
(författare)
-
Doppler-broadened mid-infrared NICE-OHMS system based on an optical parametric oscillator
- 2016
-
Ingår i: Laser Applications to Chemical, Security and Environmental Analysis. - : Optica Publishing Group (formerly OSA). - 9781943580156
-
Konferensbidrag (refereegranskat)abstract
- An OPO-based NICE-OHMS instrument for trace gas detection addressing fundamental vibration transitions in the mid-IR (3.2-3.9 µm) range has been developed. It shows a detection sensitivity for CH4 of 2.4×10−10cm−1Hz−1∕2 (corresponding to low ppt concentrations).
|
|
| 4. |
- Kristensson, Elias, et al.
(författare)
-
Recent development of methods based on structured illumination for combustion studies
- 2016
-
Ingår i: Laser Applications to Chemical, Security and Environmental Analysis, LACSEA 2016. - 9781943580156 ; Part F10-LACSEA 2016
-
Konferensbidrag (refereegranskat)abstract
- Structured illumination is an imaging method most commonly employed within the field of microscopy. However, recently the technique has spread into other scientific fields, such as for combustion research, where it has revealed new measurement opportunities. This paper describes how structured illumination can be employed for spray- and combustion research and highlights some of the recent progresses made towards temperature imaging, rapid data acquisition as well as detection of 'Dark species'.
|
|
| 5. |
- Larsson, Jim, et al.
(författare)
-
Thermometry in porous media using GASMAS - a feasibility study
- 2016
-
Ingår i: Laser Applications to Chemical, Security and Environmental Analysis, LACSEA 2016. - 9781943580156 ; Part F10-LACSEA 2016
-
Konferensbidrag (refereegranskat)abstract
- The line shape of an absorption line from molecular oxygen enclosed in the pores of a ceramic material has been studied at different temperatures. By evaluating the line width it is feasible to extract temperature information of the gas inside porous scattering materials.
|
|
| 6. |
- Larsson, K., et al.
(författare)
-
Quantitative NO2 measurements in an industrial sterilization rig using laser induced fluorescence
- 2016
-
Ingår i: Digital Holography and Three-Dimensional Imaging, DH 2016. - 2162-2701. - 9781943580156 ; Part F8-DH 2016
-
Konferensbidrag (refereegranskat)abstract
- NO2 concentration measurements have been performed in an industrial test rig using laser-induced fluorescence. The goal is to improve the understanding of the electron-induced chemical species in the plasma, thus improving the neutralization scheme.
|
|
| 7. |
- Malmqvist, E., et al.
(författare)
-
CW-laser radar for combustion diagnostics
- 2016
-
Ingår i: Laser Applications to Chemical, Security and Environmental Analysis, LACSEA 2016. - 2162-2701. - 9781943580156 ; Part F10-LACSEA 2016
-
Konferensbidrag (refereegranskat)abstract
- A CW-laser radar system developed for combustion diagnostics is described. It is based on triangulation to attain range information. Some initial results from measurements in sooting flames are shown and some future perspectives are discussed.
|
|
| 8. |
- Nordström, E., et al.
(författare)
-
Single-shot Raman linewidth measurements using time-resolved rotational CARS
- 2016
-
Ingår i: Computational Optical Sensing and Imaging, COSI 2016. - 9781943580156 ; Part F2-3D 2016
-
Konferensbidrag (refereegranskat)abstract
- A novel hybrid picosecond-nanosecond rotational CARS system is demonstrated for measurements of Raman linewidths of N2 and O2 at ambient conditions. Averaged data agree very well with previous results. The single-shot linewidth measurements are consistent with the linewidths extracted from averaged data. The potential for simultaneous thermometry and linewidth measurements on a single-shot basis is discussed.
|
|
| 9. |
- Zetterberg, Johan, et al.
(författare)
-
Laser diagnostics for the study of heterogeneous catalysis
- 2016
-
Ingår i: Laser Applications to Chemical, Security and Environmental Analysis, LACSEA 2016. - 9781943580156 ; Part F10-LACSEA 2016
-
Konferensbidrag (refereegranskat)abstract
- In heterogeneous catalysis the reactions occur on the surface of a catalyst. To understand the reaction pathways, a detailed understanding on an atomic level is critical. However, the gas atmosphere surrounding the surface dictates the interaction between the surface and the gas. At low pressures this is often neglected, but as the community turns to higher pressures it becomes important to consider gas related effects. We have used laser diagnostics to characterize the gas distributions during catalysis and thereby been able to deduce information that would otherwise lay hidden. Several of our recent results are summarized and highlighted and simultaneous measurements of the surface structure using synchrotron based methods and the gas phase using laser diagnostics is discussed.
|
|
