Bragg Deflector Research Articles

Acoustooptic Bragg deflection in LiNbO3Ti-diffused waveguides

A LiNbO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf> acoustooptic Bragg deflector utilizing a Ti-diffused optical waveguide and acoustic surface waves, which requires only 50 mW of electrical drive power to obtain 70-percent deflection, has been demonstrated.

Monolithically integrated Bragg deflector for an optical guided wave made of zinc-oxide film

A new film Bragg deflector has been fabricated on a non-piezoelectric substrate. The deflector is made of ZnO film, so that both an optical waveguide and acoustic-surface-wave transducers are monolithically integrated. High diffraction efficiencies (more than 90%) are obtained with this device.

Use of the acoustooptic light deflector as an optical isolator

In many uses of lasers, the minimization or elimination of power reentering the laser is necessary to ensure its stability. It is pointed out here that the frequency-shifting properties of an acoustooptic light deflector can be used for this purpose. By using the deflected beam from a Bragg deflector, stability of the laser is obtained when the frequency of the acoustic wave is chosen such that the frequency(ies) of the light reentering the laser, shifted by twice the acoustic frequency from the light leaving the laser, does not correspond to a cavity resonance. Experimental results demonstrating this isolation property are presented and are found to be in general agreement with other results of injection locking of lasers.