Diode Laser Array Phase Conjugate Resonator for Printer Applications
Original Publication Date: 1989-Mar-01
Included in the Prior Art Database: 2005-Jan-27
Disclosed is a technique to improve the beam characteristics of a diode laser array by incorporating a phase conjugate resonator using a photorefractive crystal. A GaAs crystal would be ideal since the entire device could then be integrated on a single wafer. It has been shown recently that photorefractive crystals, especially GaAs, have tremendous technological potential . They have been used to obtain four-wave mixing at diode laser wavelengths . The extension of four-wave mixing to obtain a phase conjugate beam is trivial. It is well known that a laser resonator having at least one conventional mirror replaced by a phase conjugate mirror (PCM) exhibits many interesting properties .