Abstract

When a single acoustooptic modulator is used to independently modulate the two nearly equal optical wavelengths of a bichromatic laser beam, each with a given acoustic frequency bandwidth, both the acoustic frequencies as well as the transducer width must be large. A general expression for this bandwidth, valid for both isotropic and anisotropic acoustooptic interactions and whatever the acoustic power and the bandwidth definition are, is derived. In uniaxial crystals, a special configuration of anisotropic interaction is shown to lead to a small acoustic frequency bandwidth with a reasonable transducer width at moderate central frequency. A practical 6-MHz bandpass modulator using the slow shear wave in paratellurite is designed, and experimental results for independent modulation of 0.5145- and 0.4880-μm wavelengths of an Ar laser are reported.

© 1984 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Bichromatic nondispersive acoustooptic deflector

M. G. Gazalet, C. Bruneel, R. Torguet, G. Thomin, and B. Nongaillard
Appl. Opt. 23(13) 2192-2197 (1984)

Acousto-optic tunable filter using double interaction for sidelobe reduction

Jean-Claude Kastelik, Hichem Benaissa, Samuel Dupont, and Michel Pommeray
Appl. Opt. 48(7) C4-C10 (2009)

Backward collinear acoustooptic interactions in bulk materials

Jose E. B. Oliveira and Cheng-Kuei Jen
Appl. Opt. 29(6) 836-840 (1990)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (13)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (27)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription