Frequency Characteristics of an Acoustooptic Modulator with Two Interdigital Transducers
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概要
- 論文の詳細を見る
An acoustooptic (AO) modulator with two interdigital transducers (IDTs) is investigated from the viewpoint of frequency characteristics of the modulation. The 1st IDT is used for driving an acoustic wave in a piezoelectric substrate and the 2nd IDT is used for controlling the reflection and the radiation of the acoustic wave propagating in the substrate. Light intensity modulation using Raman-Nath diffraction is controlled by changing the electrical terminal condition at the 2nd IDT. The modulation characteristics are found to be periodic functions of the frequency of acoustic wave, which suggests that the interference of acoustic waves in the substrate influences the modulation. In the present AO modulator, the interference of fields is utilized effectively and the electrical terminal condition with regard to not only the amplitude but also the phase can control the modulation.
- 社団法人応用物理学会の論文
- 1997-09-30
著者
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Ohki Michio
Department Of Applied Physics National Defense Academy
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Toda Kohji
Departmemt Of Electronic Engineering National Defense Academy
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Toda Kohji
Department of Electronic Engineering, National Defense Academy
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