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Título:
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Time-resolved spatial profile of TEA CO_2 laser pulses: influence of the gas mixture and intracavity apertures
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Autores:
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Serna Galán, Julio ;
Encinas Sanz, Fernando ;
Martínez Herrero, Rosario ;
Martin Mejías, Pedro
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Tipo de documento:
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texto impreso
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Editorial:
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Optical Society of America, 2001-07
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Optica
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Tipo = Artículo
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Resumen:
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The evolution of the intensity profile of transversely excited atmospheric CO_2 laser pulses is investigated within the intensity moment formalism. The beam quality factor M_2 is used to study the mode evolution. Attention is focused on the influence of both the gas mixture (N_2:CO_2:He) and the diameter of an intracavity diaphragm placed to attenuate higher-order modes. The degree of accuracy that can be attained by approximating the laser field amplitude by means of the lower-order terms of a Hermite-Gauss expansion is also analyzed. In particular, a bound for the truncation error is given in terms of two time-resolved spatial parameters, namely the beam width and the M_2 parameter.
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En línea:
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https://eprints.ucm.es/id/eprint/21974/1/SernaJulio08libre.pdf
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