Selection of CO laser single nanosecond pulse by electro-optic CdTe shutter |
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| Institution: | 1. P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991, Russia;2. Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region 141701, Russia;1. Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577, Japan;2. Institute of Ultra High Frequency Semiconductor Electronics of RAS, Moscow 117105, Russia;3. Center for Photonics and Infrared Engineering, Bauman Moscow State Technical University, Moscow 111005, Russia;4. Department of Computer Science and Engineering, University of Aizu, Aizu-Wakamatsu 965-8580, Japan;5. Department of Electrical, Computer, and Systems Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA;1. State Key Laboratory of Precision Measurement Technology and Instruments, Tianjin University, Tianjin 300072, China;2. Tianjin Key Laboratory of Biomedical Detecting Techniques & Instruments, Tianjin University, Tianjin 300072, China;3. Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China;4. Key Laboratory of Opto-electronics Information and Technical Science, Ministry of Education, Tianjin University, Tianjin 300142, China |
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| Abstract: | To select a single laser pulse from a train of nanosecond pulses emitted by a mode-locked CO laser with wavelengths from ∼5 to 6 μm, an electro-optic shutter based on CdTe Pockels cell was developed. A contrast between the selected pulse and unselected laser emission was equal to 20 and twice as much decreased in a CO laser power amplifier. To increase the contrast, a feasibility of applying a narrow-gap semiconductor as a saturable absorber is discussed. |
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| Keywords: | Pockels cell CO laser Mid-IR range Nanosecond pulse |
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