| Title |
Measurement of absorption of laser pulses using photoacoustic effect / |
| Translation of Title |
Lazerio impulsų sugerties matavimas optiniuose elementuose fotoakustiniu metodu. |
| Authors |
Gakopoulos, Sotirios |
| Full Text |
|
| Pages |
84 |
| Keywords [eng] |
photoacoustic technique ; optoacoustic technique ; laser pulses absorption ; laser – material interactions ; low noise amplifier |
| Abstract [eng] |
The topic of this masters’ thesis project is the measurement of absorption of laser pulses using photoacoustic technique. The problem concerning the measurement of absorption is weakness of the photoacoustic signal that is generated by the absorbed light, which makes it difficult to capture. The research methods that were used, start from the literature analysis and the theoretical background of the photoacoustic effect and the laser – material interactions. Afterwards, the theory is put into simulations in order to obtain valuable information about the nature of the experiments and the problems that may be encountered. Having considered all of the above, a measurement device was proposed that will satisfy the needs of the research. Then, everything was put into practice and the final experiments were conducted. The most important conclusions that are drawn are which material provide the highest absorption and consequently the easier detection of the photoacoustic effect, what is the impact of the angle of the incident laser beam and how adequate and reliable the proposed measurement device has proved to be. |
| Dissertation Institution |
Kauno technologijos universitetas. |
| Type |
Master thesis |
| Language |
English |
| Publication date |
2017 |
