| 1. |
- Bengtsson, Magnus, et al.
(författare)
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Lidar fluorescence measurements of algal growth on electrical insulators
- 2003
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Ingår i: 2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666). - 0780377346 ; , s. 473-473
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Konferensbidrag (refereegranskat)abstract
- Fluorescence measurements using lidar techniques have been shown to be useful for monitoring of algal growth on e.g. historical monuments. In this experiment similar measurements were performed on electrical insulators to examine the correlation between algal growth and the quality of the insulator, a factor of importance in the high-voltage grid management
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| 2. |
- Rippe, Lars
(författare)
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Rapidly tuneable external cavity diode laser
- 2003
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Ingår i: 2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666). - 0780377346 ; , s. 194-194
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Konferensbidrag (refereegranskat)abstract
- External cavity diode lasers are often tuned by letting a piezoelectric actuator move the grating, thereby changing the length of the cavity. In order to reach higher repeatability and tuning speeds one can incorporate an electro-optical crystal (EOC) into the cavity. The index of refraction of the EOC can be changed by applying an electric field across it, thereby accurately changing the effective optical length of the cavity. We have designed and built a laser using the ideas above for use in coherent transient spectroscopy on thulium doped inorganic crystals at 793 nm
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| 3. |
- Sjöholm, Mikael, et al.
(författare)
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Gas transport in wood assessed by laser spectroscopy
- 2003
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Ingår i: 2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666). - 0780377346 ; , s. 505-505
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Konferensbidrag (refereegranskat)abstract
- The Gas in scattering media absorption spectroscopy (GASMAS) technique provides new opportunities to nondestructively study gas in highly scattering natural and man-made porous materials. In this paper, we report applications of the GASMAS method on wood samples using diode-laser-based spectroscopy on molecular oxygen. And the integrated oxygen absorption for wood of different densities and the anisotropy related to the fibre structure was also investigated
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| 4. |
- Sjöholm, Mikael, et al.
(författare)
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Optical parametric oscillator based lidar system applied to atomic mercury monitoring
- 2003
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Ingår i: 2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666). - 0780377346 ; , s. 471-471
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Konferensbidrag (refereegranskat)abstract
- Field measurements of mercury emissions has been performed by using a mobile lidar system. In this system an Nd:YAG-pumped OPO (Optical Parametric Oscillator) laser system is employed to generate a narrow band (better than 0.2 cm-1) UV beam at the mercury resonance absorption line at 253.65 nm. An inter-comparison of the lidar system and two different point monitoring systems has been performed showing excellent agreement between the instruments
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| 5. |
- Tcherbakoff, O., et al.
(författare)
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Controlling the duration of XUV high order harmonic pulses
- 2003
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Ingår i: 2003 Conference on Lasers and Electro-Optics Europe, CLEO/EUROPE 2003. - 0780377346 - 9780780377349
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Konferensbidrag (refereegranskat)abstract
- We modulate temporally the polarization of a ∼ 30 fs, 800 nm IR pulse and use it to generate high order harmonics. The harmonic emission can clearly be confined and the XUV pulse duration can be continuously tuned from - 5 - 7 fs to 50 fs.
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| 6. |
- Weibring, Petter, et al.
(författare)
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Remote analysis of gas mixtures using an optical parametric oscillator based lidar system
- 2003
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Ingår i: 2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666). - 0780377346 ; , s. 472-472
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Konferensbidrag (refereegranskat)abstract
- A scheme for lidar measurements of multicomponent gas mixtures in the mid-IR region using a newly developed fast-switching, frequency-agile optical parametric oscillator (OPO) system combined with multivariate statistical methods has been implemented and tested. The scheme adopted was able to predict the composition of the remote hydrocarbon gas mixture within the uncertainty of the pre-determined gas composition
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