Artículo
Enhanced photoacoustic beam profiling of pulsed lasers
González, Martín Germán
; Santiago, Guillermo; Paz, M.; Slezak, Verónica Beatriz; Peuriot, Alejandro Luis
Fecha de publicación:
04/2013
Editorial:
Springer
Revista:
International Journal of Thermophysics
ISSN:
0195-928X
e-ISSN:
1572-9567
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
An improved version of a photoacoustic beam profiler of pulsed lasers is presented. The new model resorts to high-bandwidth condenser microphones to register higher-order, excited acoustic modes, thus enabling more accurate profiling. In addition, Xe was used as a buffer gas since its high atomic weight further reduces the eigenfrequencies. Furthermore, a new gas-handling system makes up for some deficiencies found in the first model. The system was calibrated using the Airy pattern generated with a pinhole illuminated by a frequency-doubled Nd:YAG laser that excited NO 2 NO 2 traces. Once calibrated, the beam profile of a TEA CO 2 CO 2 laser was obtained, using ethylene as the absorbing species. This profiler returns more accurate profiles than thermal paper.
Palabras clave:
Pulsed Photoacoustics
,
Laser Beam Profiling
,
Acoustic Modes
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Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
González, Martín Germán; Santiago, Guillermo; Paz, M.; Slezak, Verónica Beatriz; Peuriot, Alejandro Luis; Enhanced photoacoustic beam profiling of pulsed lasers; Springer; International Journal of Thermophysics; 34; 8-9; 4-2013; 1777-1784
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