ON August, 1989

Cover Story

Self- and coupled-phase modulations of ultrashort laser pulses

R.R. Alfano and P.P. Ho

The use of light to control and to generate light is most important in the fields of lasers and optical communication. One dramatic and still useful nonlinear optical phenomenon observed by Alfano and Shapiro over 19 years ago arising... more>>

Features

Measurement standards span all fields

Robert E. Parks

This month's column was prompted by a letter from a professor in Portugal to the International Commission for Optics (ICO), asking about generally accepted terms and definitions in optics. By a circuitous route, the letter ended up on my desk and prompted a look at an International Standards Organization (ISO) publication called the ISO Standards Handbook 2, Units of Measurement. more>>


Complexities and progress in studies of optical chaos

Neal B. Abraham

Deterministic chaos has come to public appreciation (via a recent PBS special and James Gleick's book Chaos) and to the quantum electronics community (via a new understanding of the pervasive irregularity of laser pulsations)1 at about the same present moment. The broader ubiquity of chaos and the intellectual challenges of its study are demonstrated by the interest of artists, astronomers, chemists, economists, mathematicians, neuroscientists, and physicists. more>>

Pulses

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