• An alternative method to specify the degree of resonator stability

• # Fulltext

https://www.ias.ac.in/article/fulltext/pram/068/04/0571-0580

• # Keywords

Degree of optical stability; 𝑆 parameter; misalignment tolerance.

• # Abstract

We present an alternative method to specify the stability of real stable resonators. We introduce the degree of optical stability or the 𝑆 parameter, which specify the stability of resonators in a numerical scale ranging from 0 to 100%. The value of zero corresponds to marginally stable resonator and $S &lt; 0$ corresponds to unstable resonator. Also, three definitions of the S parameter are provided: in terms of $A&amp;D$, $B&amp;Z_{\text{R0}}$ and $g_{1}g_{2}$. It may be noticed from the present formalism that the maximum degree of stability with $S = 1$ automatically corresponds to $g_{1}g_{2} = 1/2$. We also describe the method to measure the 𝑆 parameter from the output beam characteristics and 𝐵 parameter. A possible correlation between the 𝑆 parameter and the misalignment tolerance is also discussed.

• # Author Affiliations

1. Solid State Laser Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India

• # Pramana – Journal of Physics

Volume 95, 2021
All articles
Continuous Article Publishing mode

• # Editorial Note on Continuous Article Publication

Posted on July 25, 2019