Applied Matrials, Inc.

Gordon Janaway

Steven Thomas Coyle

An electron beam source has a photocathode with a photoemitter material having a work function, and with a beam receiving portion and an electron emitting portion. A first light source directs a first light beam onto the beam receiving portion of the photocathode to generate an electron beam from the electron emitting portion. The first light beam has a wavelength &#x3bb;such that hc/&#x3bb;is at least about the work function of the photoemitter material, where 'h' is Planck's constant and 'c' is the speed of light. A second light source directs a second light beam onto the beam receiving portion of the photocathode, such as onto the beam receiving portion, to stabilize the electron beam. The second light beam having a wavelength &#x3bb;such that hc/&#x3bb;is less than about the work function of the photoemitter material.

Growing community of inventors

Tucson, AZ, United States of America

Gordon Janaway