A5005578848- Advanced Fiber Laser Technologies
- Photonic Crystal and Fiber Optics
- Laser-Matter Interactions and Applications
- Solid State Laser Technologies
- Random lasers and scattering media
- Orbital Angular Momentum in Optics
- Advanced Optical Imaging Technologies
- Advanced Fiber Optic Sensors
- Terahertz technology and applications
Xiamen University of Technology
2023-2024
Xiamen University
2023
Although visible femtosecond lasers based on nonlinear frequency conversion of Ti:sapphire oscillators or near-infrared ultrafast have been well developed, limitations in terms footprint, cost, and efficiency called for alternative laser solutions. The fiber mode-locked oscillator as an ideal solution has achieved great success the 0.9 to 3.5 μm infrared wavelengths, but remains outstanding challenge spectrum (390 780 nm). Here, we tackle this by introducing a visible-wavelength along with...
Visible random fiber lasers have garnered significant attention due to their unique emission properties and potential applications in various fields. We first, the best of our knowledge, demonstrated a compact all-fiber structure, red wavelength, laser (RFL) based on double-clad Pr-doped ZBLAN fiber. The simple half-open cavity consists high-reflectivity pigtail mirror not only served as gain medium but also offered backward scattering. investigated effects different lengths output power...
As deep-red semiconductor lasers are still in development, high-power have traditionally relied on excimer or dye lasers, nonlinear frequency conversion of near-infrared precluding efficient, compact, and affordable laser systems. Herein, the first compact watt-level all-fiber CW Pr <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$^{3+}$</tex-math></inline-formula> -doped operating waveband was developed to...
We report, to the best of our knowledge, first demonstration an O + E-band tunable watt-level bismuth-doped phosphosilicate fiber laser and its frequency doubling red laser. Benefiting from two types bismuth active centers associated with silicon phosphorus introduced in one fiber, ultrabroad gain is available designed low-water-peak (Bi-PSF) pumped by a self-made 1239 nm Raman The high-efficiency lasing achieved maximum output power 1.705 W around 1320 slope efficiency 33.0%. wavelength can...
High-energy pulsed lasers in the green spectral region are of tremendous interest for applications space laser ranging, underwater detection, precise processing, and scientific research. Semiconductor currently difficult to access so-called “green gap,” high-energy still heavily rely on nonlinear frequency conversion near-IR lasers, precluding compact low-cost systems. Here, we address this challenge by demonstrating, first time best our knowledge, millijoule-level pulses generated directly...
We have successfully generated a 1.3/1.4 µm random fiber laser (RFL) using bismuth (Bi)-doped phosphosilicate fiber. The Bi-doped RFL has shown excellent long-term operational stability with standard deviation of approximately 0.34% over 1 h at maximum output power 549.30 mW, slope efficiency 29.21%. offers an emission spectrum ranging from 1.28 to 1.57 µm, indicating that it can be tuned within this band. Here, we demonstrated wavelength-tuning wavelength achieved through the Bragg grating...
In this letter, we report a 488 nm blue picosecond pulse generation by frequency doubling of homemade 977 watt-level all polarization maintaining mode-locked fiber laser. Based on SESAM passively Yb-doped linear cavity configuration, the seed laser shows 977.84 central wavelength, 0.13 spectral width, 12.94 ps duration, 76.09 MHz repetition rate, and 5.12 mW average power, respectively. The power is further scaled up to 2.06 W adopting an all-fiber MOPA structure, duration width are slightly...
Terahertz (THz) wave generation based on ultrafast laser is one of the most predominant and popular technologies. For THz by photoconductor antenna optical rectification, higher to conversion efficiency usually requires excitation into semiconductor or nonlinear crystal, therefore it's great desire develop with high performance. CW Yb-doped lasers at 980 nm have been applied generate 0.5 6 DFG technique. To meet demand some (e.g. BNA gold nanoplasma), fiber are ideal pump sources in be...
We report, to the best of our knowledge, first all-fiber passively mode-locked laser around 800 nm wavelength. The with a figure-9 cavity configuration consists homemade 1146 Raman fiber as pump source, 2.1 m-length Tm <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$^{3+}$ </tex-math></inline-formula> -doped ZBLAN fiber, 0.8/ notation="LaTeX">$1.15~\mu \text{m}$ end-facet dichroic mirror, and nonlinear...