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Sb2Te3 topological insulator for 52 nm wideband tunable Yb-doped passively Q-switched Research

Tao Wang, Qiang Yu, Kun Guo, Xinyao Shi, Xuefen Kan, Yijun Xu, Jian Wu, Kai Zhang, Pu Zhou,wujian15203@163.com,kzhang2015@sinano.ac.cn

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 3,   Pages 287-436 doi: 10.1631/FITEE.2000577

Abstract: saturable absorber (SA) of the family was first applied experimentally in a wideband tunable passively Q-switchedMeanwhile, stable wavelength-tunable passive Q-switching pulse operation was obtained in a Yb-doped fiber

Keywords： 拓扑绝缘体；Sb2Te3；光纤激光；被动调Q激光；波长可调谐激光    

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Preparation of ultrathin ReS2 nanosheets and their application to Q-switched Er-doped fiber Research

Junshan He, Guohua Zeng, Shaoxian Liu, Haiming Lu, Ruixian Xie, Jingjing Qi, Lili Tao, Bo Zhou,taoll@gdut.edu.cn,zhoubo@scut.edu.cn

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 3,   Pages 287-436 doi: 10.1631/FITEE.2000339

Abstract: study the exfoliation of ultrathin ReS nanosheets from the prepared ReS powder and their application to Q-switchedduration of 2.4 μs and an output power of 1.25 mW are obtained, indicating the potential application to Q-switched

Keywords： 二硫化铼；可饱和吸收体；二维材料；调Q光纤激光器    

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Passive mode-locked Er-doped fiber laser pulse generation based on titanium disulfide saturable absorber Research Articles

Xinxin Shang, Linguang Guo, Huanian Zhang, Dengwang Li, Qingyang Yue,huanian_zhang@163.com,qingyangyue@sdnu.edu.cn

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 5,   Pages 615-766 doi: 10.1631/FITEE.2000341

Abstract: In this study, (TiS) polyvinyl alcohol (PVA) film-type (SA) is synthesized with a modulation depth of 5.08% and a saturable intensity of 10.62 MW/cm by liquid-phase exfoliation and spin-coating methods. Since TiS-based SA has a strong nonlinear saturable absorption property, two types of optical soliton were observed in a mode-locked Er-doped . When the pump power was raised to 67.3 mW, a conventional mode-locked pulse train with a repetition rate of 1.716 MHz and a pulse width of 6.57 ps was generated, and the output spectrum centered at 1556.98 nm and 0.466 nm spectral width with obvious Kelly sidebands was obtained. Another type of mode-locked pulse train with the maximum output power of 3.92 mW and pulse energy of 2.28 nJ at the pump power of 517.2 mW was achieved when the polarization controllers were adjusted. Since TiS-based SA has excellent nonlinear saturable absorption characteristics, broad applications in ultrafast photonic are expected.

Keywords： 光纤激光器；被动锁模；可饱和吸收体；二硫化钛    

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Several New Semiconductor Lasers and Status, Challenges and Insights of Related Industries

Wei Xin, Li Ming, Li Jian, Wang Chao, Li Chuanchuan

Strategic Study of CAE 2020, Volume 22, Issue 3,   Pages 21-28 doi: 10.15302/J-SSCAE-2020.03.004

Abstract:

As the basis of the whole laser industry, the semiconductor laser industry is not only large-scaled but also has strong radiation and driving capacities. The semiconductor lasers are widely used in industrial, military, and living consumption fields such as optical communication, optical information processing, novel manufacturing, laser display, and biological and medical sensing. To adapt to the gradually expanding application range and satisfy the new requirements of different application scenarios, various new mechanisms, concepts, and structures have been introduced into the semiconductor laser industry through interdisciplinary penetration, greatly optimizing the wavelength coverage, beam quality, device volume, power consumption, modulation speed, and output power of the semiconductor lasers. This paper introduces several rapidly developed new semiconductor lasers by comparing their physical connotation, structural design, and preparation methods. Considering the current development status of related industries in China, we suggest that the development of the semiconductor laser industry should be closely combined with industrial application. The performance of the semiconductor lasers should be optimized in a closed-loop manner relying on the market capacity and the strong systematic development ability in China to promote the key technologies. New principles, structures, and processes should be continually introduced into this industry through interdisciplinary integration. Meanwhile, using the policy-oriented advantages in China, we suggest to increase investment in vertical external cavity surface emitting lasers, micro-nano lasers, and topological insulator lasers and conduct mass production and controllable production, thus to seize the leading position in international competition in the related fields.

Keywords： semiconductor lasers，optically pumped vertical external cavity surface emitting lasers，nanolasers，topological insulator lasers    

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2.3 μm nanosecond passive Q-switching of an LD-pumped Tm:YLF laser using gold nanorods as a saturable Research

Fu-yan Wu, Shi-qiang Wang, Hai-wei Chen, Hai-tao Huang,wfyjsnu@126.com,wsq274412@126.com,haiwei0819@163.com,hht840211@163.com

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 3,   Pages 312-317 doi: 10.1631/FITEE.2000110

Abstract: Pulses with an 843 ns pulse width and a 6.67 kHz repetition rate were achieved using this Q-switchedResults showed that GNRs provide promising passive Q-switches for Tm-doped lasers.

Keywords： Gold nanorods     Passive Q-switching     2.3 μm     Tm-doped laser materials    

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A New Type of Q-switched and Frequency-doubling Green Laser

Chen Fei,Huo Yujing,He Shufang,Feng Lichun

Strategic Study of CAE 2000, Volume 2, Issue 4,   Pages 39-42

Abstract:

A new type of LD pumped Nd： YV04- KTP Q-switched green laser is demonstrated.By using the KTP crystal as both an electro-optic Q-switcher and a frequency-doubling crystal in type

Keywords： KTP     green laser     electro-optic Q-switcher     frequency-doubling    

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Generation of noise-like pulses and soliton rains in a graphene mode-locked erbium-doped fiber ring laser Research

Pinghua Tang, Mulin Luo, Ting Zhao, Yuliang Mao,pinghuatang@xtu.edu.cn,1011773923@qq.com,zthaza@126.com,ylmao@xtu.edu.cn

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 3,   Pages 287-436 doi: 10.1631/FITEE.2000372

Abstract: We demonstrate the generation of noise-like pulses (NLPs) and soliton rains in a saturable absorber mode-locked erbium-doped fiber laser. Typical NLPs are obtained at a proper pump power and in a cavity polarization state. The soliton rain operation with multiple solitons can be achieved by finely adjusting the cavity polarization state. In addition, distinctive multi-soliton interactions are observed and investigated, including the fundamental mode-locking and multiple pulses. The experimental results can help further understand nonlinear pulse dynamics in ultrafast optics.

Keywords： 掺铒光纤激光器；石墨烯；可饱和吸收体；被动锁模    

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Traditional soliton erbium-doped fiber laser with InSe as saturable absorber Research

Xiaojuan Liu, Guomei Wang, Mingxiao Zhu, Kezhen Han, Wenfei Zhang, Huanian Zhang,zhangwenfei@sdut.edu.cn,huanian_zhang@163.com

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 3,   Pages 287-436 doi: 10.1631/FITEE.2000387

Abstract: Indium selenide (InSe) is a typical layered metal-chalcogenide semiconductor that has potential for developing ultrafast optoelectronic devices. In this work, InSe-polyvinyl alcohol (InSe-PVA) film is employed as saturable absorber and prepared by mixing InSe solution and polyvinyl alcohol solution. The nonlinear absorption properties of the InSe saturable absorber (InSe-SA) are investigated, showing that the nonsaturable absorption and modulation depth are 37.5% and 9.55%, respectively. lasers are generated in erbium-doped fiber (EDF) laser-employed InSe as a mode-locker. The central wavelength and pulse duration of the pulse are 1568.73 nm and 2.06 ps, respectively, under a repetition rate of 1.731 MHz. The maximum average output power is 16.4 mW at the pump power of 413 mW. To the best of our knowledge, this is the first demonstration of a pulse with InSe as a mode-locker. The experimental results further demonstrate that InSe is an outstanding nonlinear absorption material in ultrafast .

Keywords： 光纤激光器；纳米片；传统孤子    

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Vector soliton and noise-like pulse generation using a Ti3C2 MXene material in Research

Shuai Wang, Lei Li, Yu-feng Song, Ding-yuan Tang, De-yuan Shen, Lu-ming Zhao,sdulilei@gmail.com,lmzhao@ieee.org

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 3,   Pages 287-436 doi: 10.1631/FITEE.2000033

Abstract: We built a Tm:Ho co-doped fiber laser using a TiC material as a saturable absorber (SA). The formation of s (VSs) and s (NLPs) was observed. The SA was prepared by dripping a TiC solution on a side-polished D-shaped fiber and then naturally vaporized. The VS is characterized by two coexisting sets of Kelly sidebands. By modulating the polarization controller in the fiber laser, NLPs with about 3.3 nm bandwidth can be switched from the VS. To the best of our knowledge, this is the first time that VSs have been generated in a fiber laser using a TiC material as the SA.

Keywords： 矢量孤子；类噪声脉冲；MXene；光纤激光器    

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Transference Process Analysis of Flat Top Laser Pulse in the Uneven Media

Zhang Shaojun,Liu Jingwan,Huang Liu

Strategic Study of CAE 2002, Volume 4, Issue 6,   Pages 13-15

Abstract: application, the transmission process of flat top laser pules, which is produced with the slowly adjusting Q

Keywords： equivalent and self-focusing     uneven media     slowly adjusting Q cavity flowing empty     flat top laser pulse    

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A novel heavy haul train on road safety status monitoring technique based on fiber laser sensors

Du Yanliang,Zhang Wentao

Strategic Study of CAE 2009, Volume 11, Issue 10,   Pages 61-66

Abstract:

A novel heavy haul train safety status monitoring technique based on the fiber laser sensors was proposed in this paper. The principles of the fiber laser sensors were introduced and the schematic of the heavy haul train safety status monitoring was given. The key technologies of the monitoring system were focused, such as the high-performance fiber laser accelerometers, the high-accuracy wavelength demodulation technique, and the in-danger status recognizing technique. The systematic chematic was also proposed.

Keywords： fiber laser     heavy haul train     safety status     on road    

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Principle of Laser Nano-meter Measurement Ruler

Zhang Shulian

Strategic Study of CAE 2005, Volume 7, Issue 3,   Pages 27-34

Abstract: lasing bandwidth to three equivalent parts; again making the laser longitudinal separation being 4/3lambda;/8; with one time of repetition of the four regions the displacement of the mirror is λ /2.The measurement range： 12 mm, resolution： 79.08 nm, linearity： 5×l0-6, 2σ = 0.314

Keywords： displacement measurement     HeNe laser     mode competition     frequency splitting     cavity tuning     longitudinal mode     birefringence    

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Development of Laser Cutting and Joining Processing

Chen Li, Gong Shuili, He Enguang

Strategic Study of CAE 2020, Volume 22, Issue 3,   Pages 78-84 doi: 10.15302/J-SSCAE-2020.03.012

Abstract:

Laser cutting and joining technology is indispensable as an advanced manufacturing technology owing to its comprehensive advantages of flexibility, high efficiency, and high quality; and it has a profound impact on the manufacturing industry. With the intelligentization of advanced manufacturing, the laser cutting and joining technology will be surely promoted by the integration of laser technology and digital manufacturing technology. This study selects and analyzes four specific technologies that are most widely used in industry to summarize the application status of the laser joining and cutting technology, namely, laser welding, laser cutting, laser drilling, and laser marking. The problems faced by the development of the laser joining and cutting technology are discussed. The study shows that the development of laser cutting and joining technology should focus on the integration of the fundamental processes and equipment so as to improve key technologies in laser processing unit, laser materials processing, and intelligent integration. Moreover, research platforms for fundamental processes should be strengthened, with a focus on multi-dimensional combination of technological innovation and talent training. This will promote the coordinated development of the laser cutting and joining technology from application development to equipment market guarantee.

Keywords： laser material processing     laser welding     laser cutting     laser drilling     laser marking    

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Medical Application and Industrial Development Strategy of Laser Technology in China

Qiu Haixia, Li buhong, Ma Hui, Wei Xunbei, Yang Sihua, Li Yang, Tan Yizhou, Chen Defu, Zhao Hongyou, Zeng Jing, Gu Ying

Strategic Study of CAE 2020, Volume 22, Issue 3,   Pages 14-20 doi: 10.15302/J-SSCAE-2020.03.003

Abstract:

Laser diagnosis and treatment technology has been successfully applied in the field of healthcare and become an important part of precision diagnosis and treatment in modern medicine. This article focuses on the medical application of laser technology and summarizes the development status, trends, and problems of China’s laser technology in clinical treatment, diagnosis, and industrialization, from the perspectives of practical application and industrial chain. The study revealed that China’s laser medicine has made great progress in terms of laser treatment technology, medical laser diagnosis and treatment equipment, and the industry; however, on the whole, the clinical application of laser medical technology is still catching up with the global trend. The applied research of the technology still lacks original creativity, and the research and industrialization of medical laser equipment are at the mid-low end. The key technologies and high-end equipment such as ultrafast lasers for precision diagnosis and treatment are still under foreign monopoly. The study proposes that China should establish sub-disciplines under laser medicine; strengthen the construction of national science and technology innovation platforms for laser medicine; develop regulations on laser medical equipment in a targeted manner; launch relevant policies to support the development of the laser medical equipment industry; and strive to make breakthroughs in key technology research for medical laser diagnostic equipment.

Keywords： laser technology     medicine     laser diagnosis     laser therapy     laser industry    

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Strategic Research on China’s Laser Technology and Its Application by 2035

Research Group of Strategic Research on China’s Laser Technology and Its Application by 2035

Strategic Study of CAE 2020, Volume 22, Issue 3,   Pages 1-6 doi: 10.15302/J-SSCAE-2020.03.001

Abstract:

To promote the development of laser technology and its application, the Chinese Academy of Engineering launched a major consulting project “Strategic Research on China’s Laser Technology and Its Application by 2035” in 2018. This paper is a comprehensive research report on the project. It briefly analyzes laser technology and its instrumental, leading, and disruptive role in scientific research and industrial application, and summarizes the present situation of research and application of laser technology in frontier laser, manufacturing, information and communication, medical treatment, and other fields in China. Several problems that restrict the rapid development of lasers are presented, and the development goals of China’s laser technology and its application by 2035 are conceived. To achieve these goals, China should strengthen the overall planning at the top level to lead the rapid development of laser technology and its application and strengthen basic research to make breakthroughs in major basic problems, common technology foundation, and basic materials and devices. It also should establish research and development special projects concerning laser application to create multiple new laser industry chains, and innovate its industry coordination mechanism to improve the innovation ecology of laser industry. Moreover, China should strengthen the basic education concerning the laser technology and promote talent cultivation of the laser and optical disciplines.

Keywords： laser technology，laser manufacturing，laser communication，laser diagnosis and treatment    

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Title Author Date Type Operation

Sb2Te3 topological insulator for 52 nm wideband tunable Yb-doped passively Q-switched

Tao Wang, Qiang Yu, Kun Guo, Xinyao Shi, Xuefen Kan, Yijun Xu, Jian Wu, Kai Zhang, Pu Zhou,wujian15203@163.com,kzhang2015@sinano.ac.cn

Journal Article

Preparation of ultrathin ReS2 nanosheets and their application to Q-switched Er-doped fiber

Junshan He, Guohua Zeng, Shaoxian Liu, Haiming Lu, Ruixian Xie, Jingjing Qi, Lili Tao, Bo Zhou,taoll@gdut.edu.cn,zhoubo@scut.edu.cn

Journal Article

Passive mode-locked Er-doped fiber laser pulse generation based on titanium disulfide saturable absorber

Xinxin Shang, Linguang Guo, Huanian Zhang, Dengwang Li, Qingyang Yue,huanian_zhang@163.com,qingyangyue@sdnu.edu.cn

Journal Article

Several New Semiconductor Lasers and Status, Challenges and Insights of Related Industries

Wei Xin, Li Ming, Li Jian, Wang Chao, Li Chuanchuan

Journal Article

2.3 μm nanosecond passive Q-switching of an LD-pumped Tm:YLF laser using gold nanorods as a saturable

Fu-yan Wu, Shi-qiang Wang, Hai-wei Chen, Hai-tao Huang,wfyjsnu@126.com,wsq274412@126.com,haiwei0819@163.com,hht840211@163.com

Journal Article

A New Type of Q-switched and Frequency-doubling Green Laser

Chen Fei,Huo Yujing,He Shufang,Feng Lichun

Journal Article

Generation of noise-like pulses and soliton rains in a graphene mode-locked erbium-doped fiber ring laser

Pinghua Tang, Mulin Luo, Ting Zhao, Yuliang Mao,pinghuatang@xtu.edu.cn,1011773923@qq.com,zthaza@126.com,ylmao@xtu.edu.cn

Journal Article

Traditional soliton erbium-doped fiber laser with InSe as saturable absorber

Xiaojuan Liu, Guomei Wang, Mingxiao Zhu, Kezhen Han, Wenfei Zhang, Huanian Zhang,zhangwenfei@sdut.edu.cn,huanian_zhang@163.com

Journal Article

Vector soliton and noise-like pulse generation using a Ti3C2 MXene material in

Shuai Wang, Lei Li, Yu-feng Song, Ding-yuan Tang, De-yuan Shen, Lu-ming Zhao,sdulilei@gmail.com,lmzhao@ieee.org

Journal Article

Transference Process Analysis of Flat Top Laser Pulse in the Uneven Media

Zhang Shaojun,Liu Jingwan,Huang Liu

Journal Article

A novel heavy haul train on road safety status monitoring technique based on fiber laser sensors

Du Yanliang,Zhang Wentao

Journal Article

Principle of Laser Nano-meter Measurement Ruler

Zhang Shulian

Journal Article

Development of Laser Cutting and Joining Processing

Chen Li, Gong Shuili, He Enguang

Journal Article

Medical Application and Industrial Development Strategy of Laser Technology in China

Qiu Haixia, Li buhong, Ma Hui, Wei Xunbei, Yang Sihua, Li Yang, Tan Yizhou, Chen Defu, Zhao Hongyou, Zeng Jing, Gu Ying

Journal Article

Strategic Research on China’s Laser Technology and Its Application by 2035

Research Group of Strategic Research on China’s Laser Technology and Its Application by 2035

Journal Article