<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Extreme ultraviolet (XUV) capillary-discharge lasers (CDLs) are a suitable source for the efficient, clean ablation of ionic crystals, which are obviously difficult to ablate with conventional, long-wavelength lasers. In the present study, a single crystal of cesium iodide (CsI) was irradiated by multiple, focused 1.5-ns pulses of 46.9-nm radiation delivered from a compact XUV-CDL device operated at either 2-Hz or 3-Hz repetition rates. The ablation rates were determined from the depth of the craters produced by the accumulation of laser pulses. Langmuir probes were used to diagnose the plasma plume produced by the focused XUV-CDL beam. Both the electron density and electron temperature were sufficiently high to confirm that ablation was the key process in the observed CsI removal. Moreover, a CsI thin film on MgO substrate was prepared by XUV pulsed laser deposition; a fraction of the film was detected by X-ray photoelectron spectroscopy.</p></abstract>

Extreme ultraviolet (XUV) capillary-discharge lasers (CDLs) are a suitable source for the efficient, clean ablation of ionic crystals, which are obviously difficult to ablate with conventional, long-wavelength lasers. In the present study, a single crystal of cesium iodide (CsI) was irradiated by multiple, focused 1.5-ns pulses of 46.9-nm radiation delivered from a compact XUV-CDL device operated at either 2-Hz or 3-Hz repetition rates. The ablation rates were determined from the depth of the craters produced by the accumulation of laser pulses. Langmuir probes were used to diagnose the plasma plume produced by the focused XUV-CDL beam. Both the electron density and electron temperature were sufficiently high to confirm that ablation was the key process in the observed CsI removal. Moreover, a CsI thin film on MgO substrate was prepared by XUV pulsed laser deposition; a fraction of the film was detected by X-ray photoelectron spectroscopy.

Ablation of single-crystalline cesium iodide by extreme ultraviolet capillary-discharge laser

J. Heyrovsky Institute of Physical Chemistry of the Czech Academy of Sciences

Department of Electrical and Computer Engineering

Nukleonika

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Extreme ultraviolet (XUV) capillary-discharge lasers (CDLs) are a suitable source for the efficient, clean ablation of ionic crystals, which are obviously...

Ablation of single-crystalline cesium iodide by extreme ultraviolet capillary-discharge laser

Publié en ligne: 23 oct. 2020

Pages: 205 - 210

Reçu: 14 nov. 2019

Accepté: 30 mars 2020

DOI: https://doi.org/10.2478/nuka-2020-0031

Mots clés
Ablation, CsI, Desorption, Laser, PLD, XUV

© 2020 Jan Wild et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Ablation of single-crystalline cesium iodide by extreme ultraviolet capillary-discharge laser

Publié en ligne: 23 oct. 2020

Pages: 205 - 210

Reçu: 14 nov. 2019

Accepté: 30 mars 2020

DOI: https://doi.org/10.2478/nuka-2020-0031

Mots clésAblation, CsI, Desorption, Laser, PLD, XUV

© 2020 Jan Wild et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Mots clés
Ablation, CsI, Desorption, Laser, PLD, XUV