Title

The Dream Of A Turnkey Nonlinear Spectrophotometer Gets Closer To Reality

Abstract

The high-power ultrafast lasers and novel white-light continua are enabling novel nonlinear Z-scan devices that measure two-photon absorption. It is important to be able to characterize their nonlinear properties rapidly over a broad spectral range. The most common method for performing the measurements is the Z-scan, which is capable of measuring both nonlinear absorption and refraction at a single wavelength. The wavelengths need to be separated to use the continuum for nonlinear spectroscopy. The primary value of the method over the use of an OPA is that, because the WLC is generated in a single filament in the gas, the spatial profile is excellent over the whole visible wavelength range. The zero in the nonlinear refraction occurring near the peak of the 2PA is reminiscent of linear Kramers-Kronig relations where the index of refraction is related to an integral of the absorption over all frequencies.

Publication Date

9-1-2008

Publication Title

Laser Focus World

Volume

44

Issue

9

Number of Pages

77-82

Document Type

Article

Personal Identifier

scopus

Socpus ID

54749124347 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/54749124347

This document is currently not available here.

Share

COinS