Initial study of the gain characteristics of a CO₂ laser amplifier

Authors

Joshua Benito F. M. Natividad National Institute of Physics, University of the Philippines Diliman
Michelle M. Tiamzon National Institute of Physics, University of the Philippines Diliman
Marlon Rosendo H. Daza National Institute of Physics, University of the Philippines Diliman

Abstract

A single pass amplifier with a flowing active gain medium of carbon dioxide (CO₂), nitrogen (N₂) and helium (He) gases was investigated. The dependence of the ampifier gain on the total and partial pressure, gas composition, input power and current intensity through the ampfifler was established experimentally. The experimental setup used in determining the gain at optimized parameters is shown.
The oscillator used was a water-cooled sealed-off CO₂ laser with an output power of 14.2±0.19 Watts at an operating current of 18 mA. The percentage efficiency at this current is approximately 13.2%. A 100.2 cm amplifier tube with a bore radius of 0.8 cm was used. The optimum gas mixing ratio which corresponds to the highest gain was found to be 1:1:8 CO₂-N₂-He mixture. The maximum gain measured was 1.68 at a total pressure of 25 torr.

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Issue

1994: Proceedings of the 12th National Physics Congress of the Samahang Pisika ng Pilipinas

Article ID

SPP-1994-LP-03

Section

Laser Physics and Spectroscopy

Published

1994-10-15

How to Cite

[1]

JBFM Natividad, MM Tiamzon, and MRH Daza, Initial study of the gain characteristics of a CO2 laser amplifier, Proceedings of the Samahang Pisika ng Pilipinas 12, SPP-1994-LP-03 (1994). URL: https://proceedings.spp-online.org/article/view/SPP-1994-LP-03.