Title

Influence Of Self-Focusing On Bulk Laser-Induced Damage

Abstract

In previous work [1] we reported that the power of importance in self-focusing experiments using Gaussian spatial profile is the second critical power, P2, defined by P2=3.77 P1 rather than the often quoted P1=cλ2/(32π2n2). Here n2 is the nonlinear refractive index, c the speed of light and λ the wavelength (both in vacuum). The factor of 3.77 is a numerical factor coming from computer calculations as discussed by Marburger [2]. We also presented a method by which we could obtain n2 at irradiances very near to damage In addition, we showed the experimental conditions under which self-focusing is unimportant in damage experiments. We have now extended these results so that in damage experiments where self-focusing is important we can estimate the reduced spot size within the bulk at damage and, thus, obtain the damaging electric field magnitude. This we do by observing the far field time integrated spatial irradiance distribution. We present data for SiO2, NaCl, BK-7, and CS2. © 1988, SPIE.

Publication Date

6-27-1988

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

895

Number of Pages

72-79

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.944435

Socpus ID

84957499876 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84957499876

This document is currently not available here.

Share

COinS