- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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Optical isolation by hot atoms
摘要： A collection of hot rubidium atoms is shown to exhibit non-reciprocal optical transmission due to the interplay between thermal motion and electromagnetically induced transparency.
关键词： electromagnetically induced transparency,non-reciprocal optical transmission,optical isolation,hot atoms
更新于2025-09-23 15:21:01
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Light controlled (super) cascode, LC(S)C, a power device with optical turn-on and -off
摘要： The proposed light-controlled cascode is a power electronic device (or circuitry) which can be turned-on and -o? by optical excitation. In contrast to the light-triggered thyristor, which can optically be turned-on but not -o?, the proposed device allows optical turn-on and -o?. Also, it allows a scalability of the blocking voltage by the extension to a light-controlled supercascode [1] which is also shown. After a brief theoretical consideration experimental set-ups will be presented and measurements are shown. Due to the di?culty to buy appropriate devices required for the experimental set-ups some compromises were necessary. Therefore, these ?rst experiments show a very slow switching behaviour. However, this could become speeded up by an optimized photodiode made from wide band gap semiconductor material. In spite of these compromises pulses with a power of 1 kW were turned-on and – o? by the experimental set-up. However, this device is far away from being ready for series production but the feasibility is demonstrated and the potentials are shown.
关键词： optical isolation,wide band gap,supercascode
更新于2025-09-19 17:13:59