RT Journal Article
T1 Time-resolved spatial profile of TEA CO_2 laser pulses: influence of the gas mixture and intracavity apertures
A1 Serna Galán, Julio
A1 Encinas Sanz, Fernando
A1 Martínez Herrero, María Rosario
A1 Martín Mejías, Pedro
AB 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.
PB Optical Society of America
SN 1084-7529
YR 2001
FD 2001-07
LK https://hdl.handle.net/20.500.14352/58582
UL https://hdl.handle.net/20.500.14352/58582
LA eng
NO © 2001 Optical Society of America.This work was supported by the Comisión Interministerial de Ciencia y Tecnología of Spain under project PB97-0295.
NO Comisión Interministerial de Ciencia y Tecnología of Spain
DS Docta Complutense
RD 17 abr 2025