Laser plasma XUV spectroscopy of solid molecular targets

Gagik Ts. Nersisyan; Valeri O. Papanyan; Frank K. Tittel

doi:10.1117/12.341477

5 March 1999 Laser plasma XUV spectroscopy of solid molecular targets

Gagik Ts. Nersisyan, Valeri O. Papanyan, Frank K. Tittel

Proceedings Volume 3735, ICONO '98: Ultrafast Phenomena and Interaction of Superstrong Laser Fields with Matter: Nonlinear Optics and High-Field Physics; (1999) https://doi.org/10.1117/12.341477
Event: ICONO '98: Laser Spectroscopy and Optical Diagnostics: Novel Trends and Applications in Laser Chemistry, Biophysics, and Biomedicine, 1998, Moscow, Russian Federation

Abstract

Phthalocyanine coated targets, as well as tungsten, aluminum, and carbon targets are studied. Nanosecond and picosecond neodymium lasers capable of moderate output powers are used to produce 10¹¹ to 10¹³ W/cm² of incident intensity on the targets. The laser plasma temperature and electron density are measured by recording intensities and spectral shapes of ion lines in a spectral region from 40 to 300 nm. More than ten lines including Al³⁺ at 76.8 nm, Al²⁺ at 56 nm, Al⁺ at 237 nm, C³⁺ at 253 nm, and C²⁺ at 297 nm are observed and analyzed. The measurement technique permits us to determine electron density and electron temperature dependencies on the distance form the target surface ranging from 0.5 to 5 mm, where N_e greater than or equal to 10¹⁷ cm^-3. For example, for an aluminum plasma at a distance 1 mm from the target, N_e equals 5 (plus or minus 1) 10¹⁷ cm^-3 and T_e equals 14 eV, respectively. For a new class of molecular materials (metal-phthalocyanines) an increased XUV output is observed due to effective laser radiation coupling into molecular targets. Different types of coatings (including fullerenes) are currently under investigation.

Citation Download Citation

Gagik Ts. Nersisyan, Valeri O. Papanyan, and Frank K. Tittel "Laser plasma XUV spectroscopy of solid molecular targets", Proc. SPIE 3735, ICONO '98: Ultrafast Phenomena and Interaction of Superstrong Laser Fields with Matter: Nonlinear Optics and High-Field Physics, (5 March 1999); https://doi.org/10.1117/12.341477

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