Low pressure gas discharges for electric field intensity monitoring in microwave resonant cavities

Ahmed Al-Shamma'a; Colin Fitzpatrick; Jim Lucas; Ionnais Pandithas; Elfed Lewis

doi:10.1117/12.605786

3 June 2005 Low pressure gas discharges for electric field intensity monitoring in microwave resonant cavities

Ahmed Al-Shamma'a, Colin Fitzpatrick, Jim Lucas, Ionnais Pandithas, Elfed Lewis

Proceedings Volume 5826, Opto-Ireland 2005: Optical Sensing and Spectroscopy; (2005) https://doi.org/10.1117/12.605786
Event: OPTO-Ireland, 2005, Dublin, Ireland

Abstract

This paper introduces a new concept in the detection and monitoring of the electric field intensity in high power microwave cavities. It is proposed that the optical emission intensity of a low-pressure gas plasma discharge can be used to describe the strength of the microwave electric field that is powering the plasma. This paper discusses the principles of microwave generated plasmas and demonstrates theoretically using Monte Carlo simulations the emission intensity profile of various gas discharges at varying powers at 2.45GHz and 10GHz. A potential probe design, which uses an optical fibre to couple the discharge emission to a remote photodetector, is also introduced. It is aimed to demonstrate the potential for a new technology that will enable the convenient management of applied microwave power and its spatial distribution.

Citation Download Citation

Ahmed Al-Shamma'a, Colin Fitzpatrick, Jim Lucas, Ionnais Pandithas, and Elfed Lewis "Low pressure gas discharges for electric field intensity monitoring in microwave resonant cavities", Proc. SPIE 5826, Opto-Ireland 2005: Optical Sensing and Spectroscopy, (3 June 2005); https://doi.org/10.1117/12.605786

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available