A high power Nd：YAG end-pumped slab amplifier chain with a Nd：YVO4 innoslab laser as the master oscillator is demonstrated. A chain output power of 5210 W with beam quality of 4 times the diffraction limit is achiev...A high power Nd：YAG end-pumped slab amplifier chain with a Nd：YVO4 innoslab laser as the master oscillator is demonstrated. A chain output power of 5210 W with beam quality of 4 times the diffraction limit is achieved by double-passing the first amplifier stage and single-passing the second stage with an optical efficiency of 29% while working at a frequency of 1kHz and pulse width of 200 μs.展开更多
The 1319 nm lasers have important research value and application prospects in optical communications, biomedicine and nonlinear frequency conversion. Currently, there are few reports of high power 1319 nm continuous l...The 1319 nm lasers have important research value and application prospects in optical communications, biomedicine and nonlinear frequency conversion. Currently, there are few reports of high power 1319 nm continuous lasers with high beam quality. We have demonstrated a high output power, high beam quality 1319 nm continuous-wave laser by laser diode end-pumped Nd:YAG slab with a stable-unstable hybrid resonator. With a pumping power of 477 W, an output of 96.8 W was obtained with a slope efficiency of 26.5% and stability of 0.27%. A single wavelength laser operation at 1318.7 nm was demonstrated. At an output of 91.1 W, the beam quality factors M<sup>2</sup> in stable and unstable directions were 2.95 and 1.88, respectively.展开更多
Significant progress has been made in high-power ultrafast laser technology since the development of diode-pumped solid-state laser systems.Three main types of diode-pumped laser systems,InnoSlab,fiber,and thin disk l...Significant progress has been made in high-power ultrafast laser technology since the development of diode-pumped solid-state laser systems.Three main types of diode-pumped laser systems,InnoSlab,fiber,and thin disk lasers,offer highly efficient cooling geometries that are essential for highpower ultrafast amplifiers.These systems employ amplifier chain configurations customized to their individual geometries,scaling the low-power seed lasers to high power via multi-pass,multi-stage,and regenerative amplification techniques.The partially end-pumped InnoSlab amplifier is distinguished by its slab-shaped gain medium and a highly compact design.This design offers a large surface-to-volume ratio,moderate gain per pass,and reduced nonlinear effects,facilitating the amplification of low-power ultrafast seed laser pulses to kilowatt-level output power at high repetition rates in the multi-MHz range.This review highlights the characteristics of InnoSlab technology and its amplifier configurations,discussing recent advancements in new cavity designs aimed at enhancing gain and beam quality.Additionally,it covers the mechanisms of generating high peak power few-cycle pulses,including non-linear post-pulse compression.The review also explores the potential applications of InnoSlab systems for generating extreme ultraviolet(XUV)and terahertz(THz)frequencies.展开更多
Partially end-pumped slab laser is an innovative solid state laser, namely InnoSlab. Combining the hybrid resonator with partially end-pumping, the output power can be scaled with high beam quality. In this paper, the...Partially end-pumped slab laser is an innovative solid state laser, namely InnoSlab. Combining the hybrid resonator with partially end-pumping, the output power can be scaled with high beam quality. In this paper, the output intensity distributions are simulated by coordinate transformation fast Fourier transform (FFT) algorithm, comparing the thermal lens influence. As the simulated curves showed, the output mode is still good when the thermal lens effect is strong, indicating the good thermal stability of InnoSlab laser. Such a new kind of laser can be designed and optimized on the base of this simulation.展开更多
文摘A high power Nd：YAG end-pumped slab amplifier chain with a Nd：YVO4 innoslab laser as the master oscillator is demonstrated. A chain output power of 5210 W with beam quality of 4 times the diffraction limit is achieved by double-passing the first amplifier stage and single-passing the second stage with an optical efficiency of 29% while working at a frequency of 1kHz and pulse width of 200 μs.
文摘The 1319 nm lasers have important research value and application prospects in optical communications, biomedicine and nonlinear frequency conversion. Currently, there are few reports of high power 1319 nm continuous lasers with high beam quality. We have demonstrated a high output power, high beam quality 1319 nm continuous-wave laser by laser diode end-pumped Nd:YAG slab with a stable-unstable hybrid resonator. With a pumping power of 477 W, an output of 96.8 W was obtained with a slope efficiency of 26.5% and stability of 0.27%. A single wavelength laser operation at 1318.7 nm was demonstrated. At an output of 91.1 W, the beam quality factors M<sup>2</sup> in stable and unstable directions were 2.95 and 1.88, respectively.
基金the National Key Research and Natural Science Foundation of China(Nos.62105225,62275174,61975136,and 61935014)the Development Program of China(No.2022YFB3605800)+2 种基金the Natural Science Foundation of Top Talent of Shenzhen Technology University(No.GDRC202106)Shenzhen University Stability Support Project(Nos.20220719104008001 and 20220718173849001)Guangdong Provincial Engineering Technology Research Center for Materials for Advanced MEMS Sensor Chip(No.2022GCZX005).
文摘Significant progress has been made in high-power ultrafast laser technology since the development of diode-pumped solid-state laser systems.Three main types of diode-pumped laser systems,InnoSlab,fiber,and thin disk lasers,offer highly efficient cooling geometries that are essential for highpower ultrafast amplifiers.These systems employ amplifier chain configurations customized to their individual geometries,scaling the low-power seed lasers to high power via multi-pass,multi-stage,and regenerative amplification techniques.The partially end-pumped InnoSlab amplifier is distinguished by its slab-shaped gain medium and a highly compact design.This design offers a large surface-to-volume ratio,moderate gain per pass,and reduced nonlinear effects,facilitating the amplification of low-power ultrafast seed laser pulses to kilowatt-level output power at high repetition rates in the multi-MHz range.This review highlights the characteristics of InnoSlab technology and its amplifier configurations,discussing recent advancements in new cavity designs aimed at enhancing gain and beam quality.Additionally,it covers the mechanisms of generating high peak power few-cycle pulses,including non-linear post-pulse compression.The review also explores the potential applications of InnoSlab systems for generating extreme ultraviolet(XUV)and terahertz(THz)frequencies.
文摘Partially end-pumped slab laser is an innovative solid state laser, namely InnoSlab. Combining the hybrid resonator with partially end-pumping, the output power can be scaled with high beam quality. In this paper, the output intensity distributions are simulated by coordinate transformation fast Fourier transform (FFT) algorithm, comparing the thermal lens influence. As the simulated curves showed, the output mode is still good when the thermal lens effect is strong, indicating the good thermal stability of InnoSlab laser. Such a new kind of laser can be designed and optimized on the base of this simulation.
基金Supported by National Natural Science Foundation of China(6127514261308042+2 种基金51321091)National Key Scientific Instrument and Equipment Development Project(2011YQ030127)China Postdoctoral Science Foundation(014T70633)
