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| 1 | Petawatt and exawatt class lasers worldwide显示文摘In the 2015 review paper‘Petawatt Class Lasers Worldwide’a comprehensive overview of the current status of highpower facilities of>200 TW was presented.This was largely based on facility specifications,with some description of their uses,for instance in fundamental ultra-high-intensity interactions,secondary source generation,and inertial confinement fusion(ICF).With the 2018 Nobel Prize in Physics being awarded to Professors Donna Strickland and Gerard Mourou for the development of the technique of chirped pulse amplification(CPA),which made these lasers possible,we celebrate by providing a comprehensive update of the current status of ultra-high-power lasers and demonstrate how the technology has developed.We are now in the era of multi-petawatt facilities coming online,with 100 PW lasers being proposed and even under construction.In addition to this there is a pull towards development of industrial and multi-disciplinary applications,which demands much higher repetition rates,delivering high-average powers with higher efficiencies and the use of alternative wavelengths:mid-IR facilities.So apart from a comprehensive update of the current global status,we want to look at what technologies are to be deployed to get to these new regimes,and some of the critical issues facing their development. | Colin N.Danson Constantin Haefner Jake Bromage Thomas Butcher Jean-Christophe FChanteloup Enam A.Chowdhury Almantas Galvanauskas Leonida A.Gizzi Joachim Hein David I.Hillier Nicholas W.Hopps Yoshiaki Kato Efim A.Khazanov Ryosuke Kodama Georg Korn Ruxin Li Yutong Li Jens Limpert Jingui Ma Chang Hee Nam David Neely Dimitrios Papadopoulos Rory R.Penman Liejia Qian Jorge J.Rocca andrey A.Shaykin Craig W.Siders Christopher Spindloe Sándor Szatmári Raoul M.G.M.Trines Jianqiang Zhu Ping Zhu Jonathan D.Zuegel | 2019 | High Power Laser Science and Engineering2019，7，3： | 33 |
| 2 | Mode-locked 2.8-μm fluoride fiber laser:from soliton to breathing pulse显示文摘The mode-locked fluoride fiber laser(MLFFL)is an exciting platform for directly generating ultrashort pulses in the mid-infrared(mid-IR).However,owing to difficulty in managing the dispersion in fluoride fiber lasers,MLFFLs are restricted to the soliton regime,hindering pulse-energy scaling.We overcame the problem of dispersion management by utilizing the huge normal dispersion generated near the absorption edge of an infrared-bandgap semiconductor and promoted MLFFL from soliton to breathing-pulse mode-locking.In the breathing-pulse regime,the accumulated nonlinear phase shift can be significantly reduced in the cavity,and the pulse-energy-limitation effect is mitigated.The breathing-pulse MLFFL directly produced a pulse energy of 9.3 nJ and pulse duration of 215 fs,with a record peak power of 43.3 kW at 2.8μm.Our work paves the way for the pulse-energy and peak-power scaling of mid-IR fluoride fiber lasers,enabling a wide range of applications. | Zhipeng Qin Guoqiang Xie Hongan Gu Ting Hai Peng Yuan Jingui Ma Liejia Qian | 2019 | Advanced Photonics2019，1，6： | 9 |
| 3 | 2.8 μm all-fiber Q-switched and mode-locked lasers with black phosphorus显示文摘In past years, rare-earth-doped fluoride fiber lasers(FFLs) have developed rapidly in the mid-infrared(mid-IR)region. However, due to the lack of fiber optic devices and challenge of fluoride fiber splicing, most mid-IR FFLs have been demonstrated with free-space optic elements, limiting the advantages of all-fiber lasers for flexible delivery, stability, and compactness. Here, we report, to the best of our knowledge, the first pulsed all-fiber FFL in the mid-IR region. By taking advantage of the integration of black phosphorus flake, stable Q-switched and mode-locked pulses were obtained at 2.8 μm wavelength. We believe that this all-fiber design will promote the application of pulsed FFL in the mid-IR region. | ZHIPENG QIN GUOQIANG XIE JINGUI MA PENG YUAN LIEJIA QIAN | 2018 | Photonics Research2018，，11： | 7 |
| 4 | Generation of broadly tunable mid-infrared femtose-cond pulses by a LiNbO_3 optical parametric amplifier显示文摘Combining the configurations of collinear and small-angle noncollinear phase-matching,a mid-infrared(MIR) femtosecond optical parametric amplifier(OPA) with extended tunability is proposed and demonstrated.A tuning range from 2.0 μm to 4.7 μm is demonstrated by a two-stage LiNbO3-based femto-second OPA,which well exceeds the typical tuning range reported so far.MIR femtosecond pulses with energy up to 30 μJ are obtained. | YANG Hua QIAN LieJia YUAN Peng LUO Hang ZHU HeYuan | 2009 | Chinese Science Bulletin2009，54，20： | 1 |
| 5 | Coherent and Encoherent Combining of Fiber Array with Hexagonal Ring Distribution显示文摘 | Li Yongzhong Qian Liejia Lu Daquuan | 2009 | Optics & Laser Technology2009，15，3： | 1 |
| 6 | Coherent and Incoherent Combining of Fiber Array with Hexagonal Ring Distribution显示文摘 | Li Yongzhong Qian Liejia Lu Daquuan | 2009 | Optics & Laser Technology2009，15，3： | 1 |
| 7 | Soliton pulse compression through cascaded quadratic nonlinearity in difference-frequency generation显示文摘Cascaded nonlinearity based soliton pulse compression in the process of femtosecond difference frequency generation is studied theoretically. A set of simplified coupled wave equations under the conditions of large phase mismatch and matched group velocities is obtained,which reveals the physical mechanism of soliton compression in this process. Numerical simulations demonstrate that in the presence of group velocity dispersion and equivalent cross phase modulation,both the pump and the signal pulses can be compressed with a high compression ratio. | WANG Ke QIAN LieJia ZHU HeYuan | 2008 | Chinese Science Bulletin2008，53，13： | 1 |
| 8 | Demonstration of 85%pump depletion and 10-6 noise content in quasi-parametric chirped-pulse amplification显示文摘Full pump depletion corresponds to the upper limit of the generated signal photons relative to the pump pulse;this allows the highest peak power to be produced in a unit area of ultraintense laser amplifiers.In practical systems based on optical parametric chirped-pulse amplification,however,the typical pump depletion is only~35%.Here,we report quasi-parametric chirped-pulse amplification(QPCPA)with a specially designed 8-cm-thick Sm∶YCOB crystal that highly dissipates the idler and hence improves pump depletion.We demonstrate 56%QPCPA energy efficiency for an 810-nm signal converted from a 532-nm pump,or equivalently 85%pump depletion.As another advantage,such a record high depletion greatly suppresses the parametric superfluorescence noise in QPCPA to only~1.5×10-6 relative to the amplified signal energy.These results pave the way to beyond the ten-petawatt peak power of the currently most intense lasers. | Jingui Ma Kainan Xiong Peng Yuan Xiaoniu Tu Jing Wang Guoqiang Xie Yanqing Zheng Liejia Qian | 2022 | Light(Science & Applications)2022，11，10： | 1 |
| 9 | Coherent and incoherent combining of fiber array with hexagonal ring distribution 显示文摘 | Li Yongzhong Qian Liejia Ial Daquan | 2009 | Optical Fiber Technology2009，15，： | 1 |
| 10 | Numerical study on the efficient generation of 351 nm broadband pulses by frequency mixing of broadband and narrowband Nd:glass lasers显示文摘 | Chen Ying Yuan Peng Qian Liejia | 2010 | Opt Commun2010，283，： | 1 |
| 11 | Compensation for self-focusing by use of the cascade quadratic nonlinearity显示文摘 | Beckwitt K Wise F W Qian Liejia | 2001 | Opt Lett2001，26，21： | 1 |
| 12 | Fiber array based detection scheme for single shot pulse contrast characterization显示文摘 | Zhang Donggang Qian Liejia Yuan Peng | 2008 | Opt Lett2008，33，17： | 1 |
| 13 | Coherent and incoherent combining of fiber array with hexagonal ring distribution 显示文摘 | Yongzhong Li Liejia Qian Daquan Lu | 2007 | Opticsand Laser Tech2007，39，： | 1 |
| 14 | A CW seeded femtosecond optical parametric amplifier显示文摘A CW seeded femtosecond optical parametric amplifier, a compromise between OPG/OPA and strongly seeded OPA configurations, has been demonstrated. An independent CW Nd︰YAG laser with sub-watt power decreases the pump threshold of the OPA and improves the stability of the output pulses considerably. Output signal energies as high as 30 μJ with pulse durations less than 250 fs near 1 μm are reported from this two-stage device. | ZHU Heyuan XU Guang WANG Tao QIAN Liejia FAN Dianyuan | 2004 | Science China(Physics,Mechanics & Astronomy)2004，47，6： | 1 |
| 15 | Numerical study of spatial chirp distortion in quasi-parametric chirped-pulse amplification显示文摘Optical parametric chirped-pulse amplification is inevitably subject to high-order spatial chirp,particularly under the condition of saturated amplification and a Gaussian pump;this corresponds to an irreversible spatiotemporal distortion and consequently degrades the maximum attainable focused intensity.In this paper,we reveal that such spatial chirp distortion can be significantly mitigated in quasi-parametric chirped-pulse amplification(QPCPA)with idler absorption.Simulation results show that the quality of focused intensity in saturated QPCPA is nearly ideal,with a spatiotemporal Strehl ratio higher than 0.98.As the seed bandwidth increases,the idler absorption spectrum may not be uniform,but the Strehl ratio in QPCPA can be still high enough due to stronger idler absorption. | Yirui Wang Jing Wang Jingui Ma Peng Yuan Liejia Qian | 2022 | High Power Laser Science and Engineering2022，10，3： | 0 |
| 16 | Spatiotemporally mode-locked soliton fiber laser at 2.8µm显示文摘Spatiotemporal mode-locking creates great opportunity for pulse energy scaling and nonlinear optics research in fiber.Until now,spatiotemporal mode-locking has only been realized in normal-dispersion dissipative soliton and similariton fiber lasers.In this paper,we demonstrated the first experimental realization of a spatiotemporally mode-locked soliton laser in mid-infrared fluoride fiber with anomalous dispersion.The mode-locked fluoride fiber oscillator directly generated a record pulse energy of 16.1 nJ and peak power of 74.6 kW at 2.8µm wavelength.This work extends the spatiotemporal mode-locking to soliton fiber lasers and should have a wide interest for the laser community. | Ying’an Chen Yicheng Zhou Zhipeng Qin Guoqiang Xie Peng Yuan Jingui Ma Liejia Qian | 2023 | High Power Laser Science and Engineering2023，11，5： | 0 |
| 17 | GENERATION OF 30ps PULSE FROM A SHORT CAVITY DYE LASER PUMPED BY A COPPER BROMIDE LASER显示文摘The transient phenomena of output from a short cavity dye laser(SCDL)pumped by a copper bromide laser are investigated.For the first time a 30ps dye laser pulse was generated,wing the SCDL with Rh6G and DODCI dissolved in ethanol. | ZHU Lei QIAN Liejia ZHANG Guiyan SONG Xiudong LIN Fucheng | 1990 | Chinese Physics Letters1990，7，7： | 0 |
| 18 | Pump phase transfer and its control in hybrid seeded optical parametric amplifiers显示文摘Due to the existence of spatial walk-off and/or group-velocity mismatch effects, pump-to-signal phase transfer becomes inevitable during parametric amplification. We experimentally demonstrate that in hybrid seeded optical parametric amplifiers(OPAs) that include two OPA stages seeded by the signal and idler waves, respectively, the phase of the output signal can be restored to its initial value, although there are spatial and temporal phase fluctuations on the pump source. This method significantly relaxes the requirement for high pump beam quality, which is always very stringent in parametric amplification systems. With the introduction of this scheme into birefringent phase-matching OPAs or chirped-pulse OPAs, it should be promising to achieve intense femtosecond laser pulses that are close to the diffraction limit in space and ultra-high contrast in time, simultaneously. | Peng Yuan Jingui Ma Yongzhi Wang Jing Wang Daolong Tang Liejia Qian | 2014 | High Power Laser Science and Engineering2014，2，4： | 0 |
| 19 | Temporal-filtering dissipative soliton in an optical parametric oscillator显示文摘Dissipative solitons have been realized in mode-locked fiber lasers in the theoretical framework of the Ginzburg±Landau equation and have significantly improved the pulse energy and peak power levels of such lasers.It is interesting to explore whether dissipative solitons exist in optical parametric oscillators in the framework of three-wave coupling equations in order to substantially increase the performance of optical parametric oscillators.Here,we demonstrate a temporalfiltering dissipative soliton in a synchronously pumped optical parametric oscillator.The temporal-gain filtering of the pump pulse combined with strong cascading nonlinearity and dispersion in the optical parametric oscillator enables the generation of a broad spectrum with a nearly linear chirp;consequently,a significantly compressed pulse and high peak power can be realized after dechirping outside the cavity.Furthermore,we realized,for the first time,dissipative solitons in an optical system with a negative nonlinear phase shift and anomalous dispersion,extending the parameter region of dissipative solitons.The findings may open a new research block for dissipative solitons and provide new opportunities for mid-infrared ultrafast science. | Hui Tong Fuyong Wang Zhipeng Qin Guoqiang Xie Liejia Qian | 2022 | High Power Laser Science and Engineering2022，10，2： | 0 |
| 20 | Parametric generation and phase locking of multiple sidebands in the regime of full-back-conversion显示文摘Parametric interaction allows both forward and backward energy transfers among the three interacting waves.The back-conversion effect is usually detrimental when unidirectional energy transfer is desired.In this theoretical work,we manifest that the back-conversion effect underpins the direct generation of the picosecond pulse train without the need for a laser resonator.The research scenario is an optical parametric amplification(OPA)that consists of a second-order nonlinear medium,a quasi-continuous pump laser and a sinusoidal amplitude-modulated seed signal.The back-conversion of OPA can transfer the modulation peaks(valleys)of the incident signal into output valleys(peaks),which inherently induces spectral sidebands.The generation of each sideband is naturally accompanied with a phase shift of±π.In the regime of full-back-conversion,the amount and amplitude of the sidebands reach the maximum simultaneously,and their phase constitutes an arithmetic sequence,leading to the production of a picosecond pulse train.The generated picosecond pulse train can have an ultrahigh repetition rate of 40 GHz or higher,which may facilitate ultrafast applications with ultrahigh speed. | Wenhao Wang Yudong Tao Jingui Ma Jing Wang Peng Yuan Dongfang Zhang Liejia Qian | 2023 | High Power Laser Science and Engineering2023，11，2： | 0 |
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