Publications

A novel spectroscopy is used to study ultrafast relaxation between different excited states in conjugated polymers and other organics.

Digital optical logic circuits capable of performing bit-wise signal processing are critical building blocks for the realization of future high-speed packet-switched networks.

This article reviews recent progress in high speed optoelectronics and its applications to the measurement of high speed electronic devices and materials.

The ultrafast relaxation of excitons in GaAs, coherently excited by a short optical pulse and subjected to collisions with free carriers and noncoherent excitons, which are independently created b

A 2.2 ps full-width-at-half-maximum impulse response is measured for ion-irradiated InGaAs photoconductive switches triggered by ultrashort 1.55 mum laser pulses.

In this paper, a novel ring laser platform is presented that uses a single active element, a semiconductor optical amplifier (SOA), to provide both gain and gain modulation in the optical cavity.

Recent investigations of secondary emission from quantum well excitons following ultrafast resonant excitation have demonstrated an intricate interplay of coherent Rayleigh scattering and incoheren

Ultrafast relaxation dynamics of even parity (A sub g) states in poly(p-phenylene vinylene) derivatives were studied using multiple pulse transient spectroscopy, where two different fsec excitation

Summary form only given. Ultrafast electronic dynamics of high purity molecular crystals are studied by transient photomodulation spectroscopy.

Summary form only given. Recent utilization of organic materials as light emitting devices and thin film transistors stimulated studies of their electronic structure and basic optical properties.