High repetition rate laser at supra-atmospheric pressure for selective photo-dissociation

We present the development of a transversally excited CO2 laser that operates at pressures up to 200 kPa and 50 Hz repetition rate. The laser has been designed to trigger photo-chemical reactions. We perform a detailed study of the well-known system of capacitive transfer to exploit its virtues and...

Descripción completa

Guardado en:
Detalles Bibliográficos
Publicado: 2014
Materias:
Atmospheric pressure
Carbon dioxide
Dissociation
Discharge resistance
Feeding scheme
High repetition rate lasers
Reliable operation
Repetition rate
SIMPLE method
Spectral range
Uniform current distribution
Optical pumping
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97814799_v_n_p576_Tarnapolsky
http://hdl.handle.net/20.500.12110/paper_97814799_v_n_p576_Tarnapolsky
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_97814799_v_n_p576_Tarnapolsky
record_format dspace
spelling paper:paper_97814799_v_n_p576_Tarnapolsky2023-06-08T16:37:48Z High repetition rate laser at supra-atmospheric pressure for selective photo-dissociation Atmospheric pressure Carbon dioxide Dissociation Discharge resistance Feeding scheme High repetition rate lasers Reliable operation Repetition rate SIMPLE method Spectral range Uniform current distribution Optical pumping We present the development of a transversally excited CO2 laser that operates at pressures up to 200 kPa and 50 Hz repetition rate. The laser has been designed to trigger photo-chemical reactions. We perform a detailed study of the well-known system of capacitive transfer to exploit its virtues and avoid the use of complex system of greater cost and lower reliability. We developed a simple method to reduce the inductance of the outer circuit, thus obtaining a shorter pump pulse with fewer shots that go into the arc regime. The feeding scheme also insures a more uniform current distribution. In addition, we implemented a numerical model that simulates the discharge, considering a novel treatment of the non-linear discharge resistance. The results of this model allow optimizing the efficiency of the laser. We obtained reliable operation with pulses of ≈ 85 ns FWHM and peak power higher than 45 MW) that selectively initiate photo-dissociation reactions in the spectral range from 9 to 11 μm. © 2014 IEEE. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97814799_v_n_p576_Tarnapolsky http://hdl.handle.net/20.500.12110/paper_97814799_v_n_p576_Tarnapolsky
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Atmospheric pressure
Carbon dioxide
Dissociation
Discharge resistance
Feeding scheme
High repetition rate lasers
Reliable operation
Repetition rate
SIMPLE method
Spectral range
Uniform current distribution
Optical pumping
spellingShingle Atmospheric pressure
Carbon dioxide
Dissociation
Discharge resistance
Feeding scheme
High repetition rate lasers
Reliable operation
Repetition rate
SIMPLE method
Spectral range
Uniform current distribution
Optical pumping
High repetition rate laser at supra-atmospheric pressure for selective photo-dissociation
topic_facet Atmospheric pressure
Carbon dioxide
Dissociation
Discharge resistance
Feeding scheme
High repetition rate lasers
Reliable operation
Repetition rate
SIMPLE method
Spectral range
Uniform current distribution
Optical pumping
description We present the development of a transversally excited CO2 laser that operates at pressures up to 200 kPa and 50 Hz repetition rate. The laser has been designed to trigger photo-chemical reactions. We perform a detailed study of the well-known system of capacitive transfer to exploit its virtues and avoid the use of complex system of greater cost and lower reliability. We developed a simple method to reduce the inductance of the outer circuit, thus obtaining a shorter pump pulse with fewer shots that go into the arc regime. The feeding scheme also insures a more uniform current distribution. In addition, we implemented a numerical model that simulates the discharge, considering a novel treatment of the non-linear discharge resistance. The results of this model allow optimizing the efficiency of the laser. We obtained reliable operation with pulses of ≈ 85 ns FWHM and peak power higher than 45 MW) that selectively initiate photo-dissociation reactions in the spectral range from 9 to 11 μm. © 2014 IEEE.
title High repetition rate laser at supra-atmospheric pressure for selective photo-dissociation
title_short High repetition rate laser at supra-atmospheric pressure for selective photo-dissociation
title_full High repetition rate laser at supra-atmospheric pressure for selective photo-dissociation
title_fullStr High repetition rate laser at supra-atmospheric pressure for selective photo-dissociation
title_full_unstemmed High repetition rate laser at supra-atmospheric pressure for selective photo-dissociation
title_sort high repetition rate laser at supra-atmospheric pressure for selective photo-dissociation
publishDate 2014
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97814799_v_n_p576_Tarnapolsky
http://hdl.handle.net/20.500.12110/paper_97814799_v_n_p576_Tarnapolsky
_version_ 1768545166759559168

Ejemplares similares