Login (DCU Staff Only)
Login (DCU Staff Only)

DORAS | DCU Research Repository

Explore open access research and scholarly works from DCU

Advanced Search

Ultrafast and intense laser interaction with gases and solids

Kelly, Mossy (2013) Ultrafast and intense laser interaction with gases and solids. PhD thesis, Dublin City University.

A dedicated laboratory has been built in DCU to study the interaction between ultra-short, intense laser radiation with both solid and gaseous materials. A commercial laser system with high intensity (3 mJ), and short temporal dura- tion ( 32 fs) has been installed and characterised as part of this project. A static, single shot Nomarski interferometer has been developed and by exploiting the non- linear response of an optical filter, the pulse width of the laser has been measured. The interaction of high intensity laser radiation with solid materials was also investigated. Experiments using a wire probe to characterise a silicon laser produced plasma were performed. The emission of ions and electrons within the laser plasma as well as the angular distribution of both species has been measured and the effects of laser intensity, laser wavelength and laser polarisation are investigated. In a complementary experiment, the expansion dynamics of the laser plasma are studied with space resolved Langmuir probe measurements. These results are analysed and presented in the context of double layer formations within the plasma plume. A Wiley-McLaren spectrometer has been built to study the interaction of high intensity laser light with gas jets. The design and construction of the spectrometer is detailed as well as its characterisation. The effects of polarisation are studied with molecular nitrogen as a gas target.
Item Type:Thesis (PhD)
Date of Award:November 2013
Supervisor(s):Costello, John T.
Uncontrolled Keywords:Ultrafast laser; Femtosecond laser; Autocorrelator
Subjects:Physical Sciences > Laser plasmas
Physical Sciences > Spectrum analysis
Physical Sciences > Photonics
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Science and Health > School of Physical Sciences
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 3.0 License. View License
Funders:Science Foundation Ireland, Irish Research Council for Science Engineering and Technology
ID Code:19362
Deposited On:05 Dec 2013 11:26 by John Costello . Last Modified 19 Jul 2018 15:01

Full text available as:

[thumbnail of PhD Thesis]
PDF (PhD Thesis) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader


Downloads per month over past year

Archive Staff Only: edit this record