Positive and Negative Optical Responses in High-Electron Mobility Transistors and Their Applications to Optically Controlled Microwave Oscillators
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- Ishikawa Atsushi
- Graduate School of Engineering Science, Osaka University
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- Murata Hiroshi
- Graduate School of Engineering Science, Osaka University
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- Tanaka Takuo
- Graduate School of Engineering Science, Osaka University
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- Shiomi Hidehisa
- Graduate School of Engineering Science, Osaka University
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- Okamura Yasuyuki
- Graduate School of Engineering Science, Osaka University
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- Yamamoto Sadahiko
- Graduate School of Engineering Science, Osaka University
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抄録
We investigated optical responses of high-electron mobility transistors (HEMTs) by the use of a tightly focused optical beam. Positive and negative optical responses in the HEMTs were observed according to the irradiation position of the optical beam. The positive optical response was obtained by the optical beam irradiation close to the gate electrodes of the HEMTs with appropriate DC-bias voltages. While the negative optical response was obtained by the optical beam irradiation away from the gate electrodes. The light-induced increase and decrease of the drain currents were observed over 1 mA by the irradiation of a 10 μW CW light beam. The increase and decrease by as much as 5 dB of the small signal gain of the HEMTs in the microwave frequency range were also observed. We also applied these irradiation-position-dependent positive and negative optical responses to the optical control of the microwave oscillator composed of the HEMT. Microwave oscillations at 11.7 GHz from the oscillator were switched between “ON” and “OFF” by the selective irradiation of the successive focused light pulses.
収録刊行物
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- Japanese Journal of Applied Physics
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Japanese Journal of Applied Physics 43 (3), 997-1001, 2004
The Japan Society of Applied Physics
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詳細情報 詳細情報について
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- CRID
- 1390001206265120000
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- NII論文ID
- 30021853950
- 10012715009
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- NII書誌ID
- AA10457675
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- ISSN
- 13474065
- 00214922
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- NDL書誌ID
- 6887423
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 使用不可