All-optical effectively increase the semiconductor optical recovery time or the high-speed turbo-switches can switching speed using cascaded amplifiers （SOAs）. The overall bandwidth of turbo-switch was numerically a...All-optical effectively increase the semiconductor optical recovery time or the high-speed turbo-switches can switching speed using cascaded amplifiers （SOAs）. The overall bandwidth of turbo-switch was numerically analyzed with time-domain and frequency-domain SOA models. The turbo-switch was explored from the fundamental carrier dynamics in SOAs for the purpose of further increasing its operation speed. An integrated turbo-switch was also been proposed and demonstrated, where a phase adjustable Mach-Zehnder interferometer （MZI） was applied as an optical band-pass filter between SOAs. Wavelength conversion was first demonstrated at 84.8 Gbit/s using the integrated turbo-switch.展开更多
A 3-input all-optical priority encoder is designed. Proof-of-concept experiment is performed at 40-Gbit/s based on a cross-gain modulation （XGM） in two parallel semiconductor optical amplifiers （SOAs）. Output logi...A 3-input all-optical priority encoder is designed. Proof-of-concept experiment is performed at 40-Gbit/s based on a cross-gain modulation （XGM） in two parallel semiconductor optical amplifiers （SOAs）. Output logic signals with over 10-dB extinction ratios （ERs） and clear open eye diagrams are obtained. No additional input light beam is used. The proposed scheme may be a promising candidate for future ultrafast all-optical digital signal processing circuits and computing systems.展开更多
An all solid-state pulsed power generator for plasma immersion ion implantation （PIII） is described. The pulsed power system is based on a Marx circuit configuration and semi- conductor switches, which have many adv...An all solid-state pulsed power generator for plasma immersion ion implantation （PIII） is described. The pulsed power system is based on a Marx circuit configuration and semi- conductor switches, which have many advantages in adjustable repetition frequency, pulse width modulation and long serving life compared with the conventional circuit category, tube-based technologies such as gridded vacuum tubes, thyratrons, pulse forming networks and transformers. The operation of PIII with pulse repetition frequencies up to 500 Hz has been achieved at a pulse voltage amplitude from 2 kV to 60 kV, with an adjustable pulse duration from 1 μs to 100 μs. The proposed system and its performance, as used to drive a plasma ion implantation chamber, are described in detail on the basis of the experimental results.展开更多
Femtosecond time-resolved fluorescence non-collinear optical parametric amplification spectroscopy （FNOPAS） is a versatile technique with advantages of high sensitivity, broad detection bandwidth, and intrinsic spec...Femtosecond time-resolved fluorescence non-collinear optical parametric amplification spectroscopy （FNOPAS） is a versatile technique with advantages of high sensitivity, broad detection bandwidth, and intrinsic spectrum correction func- tion. These advantages should benefit the study of coherent emission, such as measurement oflasing dynamics. In this letter, the FNOPAS was used to trace the lasing process in Rhodamine 6G （R6G） solution and organic semiconductor nano-wires. High-quality transient emission spectra and lasing dynamic traces were acquired, which demonstrates the applicability of FNOPAS in the study of lasing dynamics. Our work extends the application scope of the FNOPAS technique.展开更多
基金Acknowledgements This work was supported in part by the National Program on Key Basic Research Project （No. 2012CB315602）, the National Natural Science Foundation of China （Grant Nos. 61571291, 61431009, 61221001 and 61132004）, and International S＆T Cooperation Program of China （No. S2016G8017）.
文摘All-optical effectively increase the semiconductor optical recovery time or the high-speed turbo-switches can switching speed using cascaded amplifiers （SOAs）. The overall bandwidth of turbo-switch was numerically analyzed with time-domain and frequency-domain SOA models. The turbo-switch was explored from the fundamental carrier dynamics in SOAs for the purpose of further increasing its operation speed. An integrated turbo-switch was also been proposed and demonstrated, where a phase adjustable Mach-Zehnder interferometer （MZI） was applied as an optical band-pass filter between SOAs. Wavelength conversion was first demonstrated at 84.8 Gbit/s using the integrated turbo-switch.
基金This work was supported by the National Science Fund for Distinguished Young Scholars （No. 61125501）, the National Natural Science Foundation of China （Grant No. 60877056）, and the National Basic Research Program of China （No. 2011CB301704）.
文摘A 3-input all-optical priority encoder is designed. Proof-of-concept experiment is performed at 40-Gbit/s based on a cross-gain modulation （XGM） in two parallel semiconductor optical amplifiers （SOAs）. Output logic signals with over 10-dB extinction ratios （ERs） and clear open eye diagrams are obtained. No additional input light beam is used. The proposed scheme may be a promising candidate for future ultrafast all-optical digital signal processing circuits and computing systems.
基金supported by National Natural Science Foundation of China (Nos. 50437020, 10675049)
文摘An all solid-state pulsed power generator for plasma immersion ion implantation （PIII） is described. The pulsed power system is based on a Marx circuit configuration and semi- conductor switches, which have many advantages in adjustable repetition frequency, pulse width modulation and long serving life compared with the conventional circuit category, tube-based technologies such as gridded vacuum tubes, thyratrons, pulse forming networks and transformers. The operation of PIII with pulse repetition frequencies up to 500 Hz has been achieved at a pulse voltage amplitude from 2 kV to 60 kV, with an adjustable pulse duration from 1 μs to 100 μs. The proposed system and its performance, as used to drive a plasma ion implantation chamber, are described in detail on the basis of the experimental results.
基金Project supported by the National Natural Science Foundation of China(Grant Nos.20925313 and 21503066)the Innovation Program of Chinese Academy of Sciences(Grant No.KJCX2-YW-W25)+1 种基金the Postdoctoral Project of Hebei University,Chinathe Project of Science and Technology Bureau of Baoding City,China(Grant No.15ZG029)
文摘Femtosecond time-resolved fluorescence non-collinear optical parametric amplification spectroscopy （FNOPAS） is a versatile technique with advantages of high sensitivity, broad detection bandwidth, and intrinsic spectrum correction func- tion. These advantages should benefit the study of coherent emission, such as measurement oflasing dynamics. In this letter, the FNOPAS was used to trace the lasing process in Rhodamine 6G （R6G） solution and organic semiconductor nano-wires. High-quality transient emission spectra and lasing dynamic traces were acquired, which demonstrates the applicability of FNOPAS in the study of lasing dynamics. Our work extends the application scope of the FNOPAS technique.
