| Autor: |
Rashid, H., Kissa, K., Kallman, J., Smith, D. A., Bao, Z., Chakravarthy, R. S., Pathan, M. A., Imam, N. |
| Zdroj: |
Optics Letters; March 1996, Vol. 21 Issue: 5 p342-344, 3p |
| Abstrakt: |
One can determine the acoustic profile of an acousto-optic tunable filter (AOTF) either by measuring the intensity of a laser diffracted off the surface of an AOTF by the surface acoustic wave (SAW) or by measuring the optical output power of an AOTF as a short burst of rf energy is launched down the device. This rf-burst technique (also called pulse probing) is compared with the established optical diffraction SAW profilometry technique. We demonstrate the usefulness of rf-burst profilometry to measure the acousto-optic coupling as a function of position along an AOTF interaction region. Such a probe can be used to make adjustments to the acousto-optic coupling in real time to achieve passband shape modification in complex AOTF structures. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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