Title :
Guided-wave acoustooptic Bragg cells in GaAs and application at GHz frequencies
Author :
Abdelrazek, Y. ; Tsai, C.S.
Author_Institution :
Dept. of Electr. Eng., California Univ., Irvine, CA, USA
Abstract :
High-performance guided-wave acoustooptic Bragg cells operating at a surface acoustic wave (SAW) center frequency of 1.11 GHz have been realized in GaAs. The intensity and polarization of both the undiffracted lights were measured as a function of the RF drive power and the polarization of the incident light, respectively. Diffraction efficiencies as high as 38% for TEO to TEO mode diffraction and 32% for TMO to TMO mode diffraction were achieved at an acoustic drive power of 2.72 mW and a laser wavelength of 1.15 μm. The gigahertz Bragg cell has also been used to perform RF spectral analysis. A total of 27 channels at a frequency resolution of approximately 3.0 MHz has been obtained at the optical wavelength of 1.30 μm
Keywords :
acousto-optical devices; spectral analysers; surface acoustic wave devices; 1.3 micron; 3 MHz; GaAs; RF spectral analysis; gigahertz Bragg cell; guided-wave acoustooptic Bragg cells; mode diffraction; surface acoustic wave; undiffracted lights; Acoustic diffraction; Acoustic measurements; Acoustic waves; Gallium arsenide; Optical polarization; Optical surface waves; Power measurement; Radio frequency; Surface acoustic waves; Tellurium;
Conference_Titel :
Ultrasonics Symposium, 1989. Proceedings., IEEE 1989
Conference_Location :
Montreal, Que.
DOI :
10.1109/ULTSYM.1989.67034
