Lawrence Kuhn

ERRATA: GRATING COUPLER FOR EFFICIENT EXCITATION OF OPTICAL GUIDED WAVES IN THIN FILMS

We report a new method of coupling a laser beam to thin‐film optical guided waves which utilizes an optical grating that is made from photoresist and fabricated directly on the film. High efficiency coupling (∼40 %) into a single mode in a glass film is observed.

DEFLECTION OF AN OPTICAL GUIDED WAVE BY A SURFACE ACOUSTIC WAVE

The experimental demonstration of deflection of an optical film‐guided wave by a surface acoustic wave is reported. When Bragg conditions are satisfied, 0.18 W acoustic power gives rise to 66% deflection efficiency as measured by the depletion of the incident optical guided wave.

Ink jet printing nozzle arrays etched in silicon

Ink jet printing nozzle arrays in the form of truncated pyramidal holes anisotropically etched into a silicon substrate have been fabricated. Eight‐nozzle arrays dixplay excellent performance characteristics with regard to uniformity of direction (<± 1mra), velocity (<± 10 cm/sec) at 1000–3000 cm/sec), and drop formation.

Silicon charge electrode array for ink jet printing

A monolithic charge electrode array suitable for use in a multiple channel ink jet printing apparatus has been fabricated by anisotropic etching of trapezoidal slots through a

Optical Guided Wave Mode Conversion by an Acoustic Surface Wave

The experimental observation of efficient (55%) mode conversion of thin‐film optical guided waves by a collinear interaction with a surface acoustic wave is reported. The effects of waveguide dispersion and finite geometry are discussed.

Enhanced harmonic response of an interdigital surface acoustic wave transducer

We describe a surface acoustic wave interdigital transducer designed to display enhanced response at harmonics of its fundamental operating frequency. The performance of the transducer compares well with predictions based on a simple model.