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Acousto-optic modulator with wide bandwidth and large angular aperture

Acousto-optic modulator with wide bandwidth and large angular aperture

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Published

A new type of acousto-optic (AO) modulator with enhanced performance is described. By using phased array transducers in a birefringent AO cell, it is possible to simultaneously satisfy the tangential and noncritical phase matching conditions and achieve both large bandwidth and angular aperture. The new design is optimum for modulators and low resolution deflectors with the important advantage of fast input optics.

Inspec keywords: acousto-optical devices; birefringence; optical modulation

Other keywords: birefringent AO cell; low resolution deflectors; phased array transducers; phase matching conditions; bandwidth; fast input optics; angular aperture; acousto-optic modulator

Subjects: Optical beam modulators; Optical propagation and transmission in homogeneous and anisotropic media; birefringence; Acousto-optical devices

References

    1. 1)
      • H. Lee . Acousto-optic light modulators with large bandwidth and angular aperture. IEEE Trans. , 485 - 486
    2. 2)
      • I.C. Chang . Noncollinear acousto-optic tunable filter with large angular aperture. Appl. Phys. Lett. , 370 - 372
    3. 3)
      • I.C. Chang . Acousto-optic tunable filters. Opt. Eng. , 824 - 829
    4. 4)
      • I.C. Chang . Acousto-optics devices and applications. IEEE Trans. , 2 - 22
    5. 5)
      • Chang, I.C.: `Birefringent phased array Bragg cells', IEEE Ultrason. Symp. Proc., 1985, p. 381–384.
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