Multiple spot mirrors as total reflectors inside stable XeCl laser cavities

Antonella Rizzo, Praveen Aghamkar, Ferdinande De Tomasi, Maria Rita Perrone, Maria Lucia Protopapa, Salvatore Scaglione

Research output: Contribution to conferencePaper

Abstract

Multiple spot mirrors are non-conventional optical components which present a number of equally spaced circular spots with a high reflectance that decreases to zero outside the spots. It is believed that the use of multiple spot mirrors as full reflectors in plane-parallel laser cavities should allow to improve the laser beam optical quality and get a good filling of the active medium. A double-spot mirror and a four-spot mirror for a XeCl laser cavity (λ=308 nm) have been fabricated by depositing HfO2and SiO2thin films by reactive ion beam sputtering. The design employed allows to obtain a maximum reflectance (79%) on the spot area and a reflectance lower than 0.5% outside the spots by shaping the thickness of one of the inner layer. To this aim, a properly shaped mask was put inside the vacuum chamber during the deposition of the graded layer. The realization and the optical characterization of these devices are presented in this paper.
Original languageEnglish
DOIs
Publication statusPublished - 2003
Event19th Congress of the International Commisssion for Optics Optics for the Quality of Life - , Italy
Duration: 1 Jan 2003 → …

Conference

Conference19th Congress of the International Commisssion for Optics Optics for the Quality of Life
CountryItaly
Period1/1/03 → …

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Rizzo, A., Aghamkar, P., De Tomasi, F., Perrone, M. R., Protopapa, M. L., & Scaglione, S. (2003). Multiple spot mirrors as total reflectors inside stable XeCl laser cavities. Paper presented at 19th Congress of the International Commisssion for Optics Optics for the Quality of Life, Italy. https://doi.org/10.1117/12.527568