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Proceedings Paper

Study of point defects created by high-intensity ultrashort pulse laser in YLF crystals
Author(s): Lilia Coronato Courrol; Everson Braganca dos Santos; Ricardo Elgul Samad; Izilda Marcia Ranieri; Laercio Gomes; Anderson Zanardi de Freitas; Nilson Dias Vieira
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Paper Abstract

In this work we report the creation of color centers in LiF and YLF crystals by high intensity, ultrashort laser pulses. We used pure and Tm3+ and Oxygen doped samples, all irradiated with a Ti:Sapphire CPA laser system and also with electron beam, at room temperature. In both kinds of irradiations the production of photochromic damages and color centers that have absorption bands in UV and visible range was observed. A comparison between the two kinds of irradiation was done and the involved processes are described in this paper. F2+ stable centers were produced by the ultrashort laser pulses irradiation in contrast to the well-known, short lived centers produced by electron beams, and a mechanism was proposed to explain the observed stability.

Paper Details

Date Published: 23 March 2005
PDF: 8 pages
Proc. SPIE 5710, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications IV, (23 March 2005); doi: 10.1117/12.588407
Show Author Affiliations
Lilia Coronato Courrol, Lab. de Espectroscopia Optica, FATEC-SP (Brazil)
Everson Braganca dos Santos, Lab. de Espectroscopia Optica, FATEC-SP (Brazil)
Ricardo Elgul Samad, Ctr. de Laser e Apicacoes, IPEN-CNEN (Brazil)
Izilda Marcia Ranieri, Ctr. de Laser e Apicacoes, IPEN-CNEN (Brazil)
Laercio Gomes, Ctr. de Laser e Apicacoes, IPEN-CNEN (Brazil)
Anderson Zanardi de Freitas, Ctr. de Laser e Apicacoes, IPEN-CNEN (Brazil)
Nilson Dias Vieira, Ctr. de Laser e Apicacoes, IPEN-CNEN (Brazil)


Published in SPIE Proceedings Vol. 5710:
Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications IV
Peter E. Powers, Editor(s)

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