Compact solid-State switched pulsed power and its applications

Jiang, Weihua; Yatsui, Kiyoshi; Takayama, Ken; Akemoto, M.; Nakamura, Eiji; Shimizu, Naohiro; Tokuchi, Akira; Rukin, S. N.; Тарасенко, В. Ф.; Панченко, А. Н.

doi:10.1109/jproc.2004.829003

Cited by 207 publications

(17 citation statements)

References 26 publications

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“…The capacitance is determined by the dimensions and material of the crystal; therefore, the main way for the reduction of the rise/fall time of Pockels cell is improvement of the electronics of the high voltage driver. There are only a few usable concepts for high voltage driver design: metal-oxide-semiconductor field-effect transistors (MOSFET) or bipolar avalanche transistors connected in series [21]. The high voltage drivers based on the MOSFETs connected in series provide the laser beam modulation frequency up to 1 MHz with the 30 ns rise/fall time of pulse and adjustable pulse width [22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Piezoelectric Ringing Frequency Response of Beta Barium Borate Crystals

Sinkevičius

Bielskis

2019

Crystals

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The piezoelectric ringing phenomenon in Pockels cells based on the beta barium borate crystals was analyzed in this work. The investigation results show that piezoelectric ringing is caused by multiple high voltage pulses with a frequency in the range from 10 kHz up to 1 MHz. Experimental investigation of frequency response and Discrete Fourier transformation was used for analysis. The method of piezoelectric ringing investigation based on the analysis of difference of real and simulated optical signals spectrums was proposed. The investigations were performed for crystals with 3 × 3 × 25 mm, 4 × 4 × 25 mm and 4 × 4 × 20 mm dimensions. It was estimated that piezoelectric ringing in the beta barium borate crystal with dimensions of 3 × 3 mm × 25 mm occurred at the 150, 205, 445, 600 and 750 kHz frequencies of high voltage pulses.

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Section: Introductionmentioning

confidence: 99%

Investigation of Piezoelectric Ringing Frequency Response of Beta Barium Borate Crystals

Sinkevičius

Bielskis

2019

Crystals

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“…We established a DBD generator with pulse power to produce plasma. The pulse power source we selected was a nanosecond-pulse generator based on semiconductor opening switches (SOS) (41), for which the parameters were 44-kV peak-to-peak voltage, 300-ns pulse rise time, 250-ns pulse width, and 600-Hz pulse repetition frequency.…”

Section: Methodsmentioning

confidence: 99%

Sterilizing Processes and Mechanisms for Treatment of Escherichia coli with Dielectric-Barrier Discharge Plasma

Wang

Zhang

Luo

et al. 2019

Appl Environ Microbiol

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With increasing attention toward novel sterilization methods, plasma sterilization has gained more and more interest. However, the underlying mechanisms are still unknown. In this paper, we investigated the inactivation of Escherichia coli using dielectric-barrier discharge (DBD) plasma in saline water. There were three processes shown in the survival curve, namely, during the preparation period, the reaction period, and the saturation period. Observations under a transmission electron microscope (TEM) and detection by Fourier transform infrared spectroscopy (FT-IR) supplied adequate details regarding these processes. Based on these results, we infer that during the preparation period, the main process is the accumulation of chemical substances. During the reaction period, adequate amounts of chemicals decompose and denature cell membranes and macromolecules to kill bacteria in large quantities. During the saturation period, the killing effect decreases because of the protection by clustered cells and the saturation of pH. This study of sterilizing processes systematically reveals the mechanisms of plasma sterilization. IMPORTANCE Compared with traditional methods, plasma sterilization has advantages of high efficiency, easy operation, and environmental protection. This may be more suitable for air and sewage sterilization in specific spaces, such as hospitals, laboratories, and pharmaceutical factories. However, the mechanisms of sterilization are still relatively unknown, especially for bactericidal activities. Knowledge of sterilization processes provides guidance for practical applications. For example, the bactericidal action mainly occurs during the reaction period, and the treatment time can be set based on the reaction period, which could save a lot of energy. The results of this study will help to improve the efficiency of plasma sterilization devices.

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“…Various topologies of high voltage pulse generators (Pockels cell drivers) have been used for the control of the Pockels cells: high frequency triodes (Bado et al 1998), krytrons (Hyer et al 2008;Hyde et al 1977), thyratrons (Barbosa et al 2007;Barbosa et al 2008), discharge (Essmann et al 2018;Kimura 2017) and drift-step-recovery diodes (Kesar et al 2016). Each of the topologies has its advantages and disadvantages (Jiang et al 2004), but the most common are two: MOSFET and avalanche bipolar transistors. In these topologies, the transistors are connected in series to distribute high voltage stress.…”

Section: Overview Of the Principle And Problems Of Pockels Cellsmentioning

confidence: 99%

Pjezoelektrinių virpesių slopinimo pokelso narveliuose tyrimas

Sinkevičius¹

2021

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Vilnius, 2021 Disertacija rengta 2017-2021 metais Valstybiniame mokslinių tyrimų institute Fizinių ir technologijos mokslų centre. Vadovas prof. dr. Algirdas BAŠKYS (Valstybinis mokslinių tyrimų institutas Fizinių ir technologijos mokslų centras, elektros ir elektronikos inžinerija -T 001). Vilniaus Gedimino technikos universiteto elektros ir elektronikos inžinerijos mokslo krypties disertacijos gynimo taryba: Pirmininkas prof. dr. Dalius NAVAKAUSKAS (Vilniaus Gedimino technikos universitetas, elektros ir elektronikos inžinerija -T 001). Nariai: doc. dr. Aidas MATIJOŠIUS (Vilniaus universitetas, fizika -N 002), prof. dr. Jurij NOVICKIJ (Vilniaus Gedimino technikos universitetas, elektros ir elektronikos inžinerija -T 001), dr. Iouliia SKLIAROVA (Aveiro universitetas, Portugalija, elektros ir elektronikos inžinerija -T 001), prof. dr. Algirdas SUŽIEDĖLIS (Valstybinis mokslinių tyrimų institutas Fizinių ir technologijos mokslų centras, fizika -N 002). Disertacija bus ginama viešame Elektros ir elektronikos mokslo krypties disertacijos gynimo tarybos posėdyje 2021 m. lapkričio 9 d. 10 val. Vilniaus Gedimino technikos universiteto senato posėdžių salėje.

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Compact solid-State switched pulsed power and its applications

Cited by 207 publications

References 26 publications

Investigation of Piezoelectric Ringing Frequency Response of Beta Barium Borate Crystals

Investigation of Piezoelectric Ringing Frequency Response of Beta Barium Borate Crystals

Sterilizing Processes and Mechanisms for Treatment of Escherichia coli with Dielectric-Barrier Discharge Plasma

Pjezoelektrinių virpesių slopinimo pokelso narveliuose tyrimas

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