By Topic

Radial profile of neon 1s5atoms in a He-Ne active discharge and their lens effect on lasing at 6401 Å

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Schlie, LaVerne A. ; Univ. of Illinois, Urbana, IL, USA ; Verdeyen, J.T.

A laser interferometer was used to determine the spatial distribution of the neon1s_{5}metastable states in an auxiliary active discharge, identical to the one used for a He-Ne laser at 6401 Å. The resulting distribution was a parabola, which crossed zero at the discharge tube walls. Measurements of the 6401-Å spot size were used to determine the axial metastable density from the calculation of the gas lens effect associated with this radial distribution. Excellent agreement was obtained between the two methods. The results show that the lens effect of these metastables is responsible for the anomalous appearance of lasering at 6401 Å in near-hemispherical cavities. For such resonators, the effective radius of curvature of the spherical mirror is increased while the equivalent mirror spacing is decreased; thus, the diffraction losses at 6401 Å are significantly reduced. Preliminary results are also given to show that the lens effect is more pronounced for the higher order modes.

Published in:

Quantum Electronics, IEEE Journal of  (Volume:5 ,  Issue: 1 )