A5065138129- Advanced Fiber Laser Technologies
- Solid State Laser Technologies
- Photonic Crystal and Fiber Optics
- Photorefractive and Nonlinear Optics
- Laser-Matter Interactions and Applications
- Advanced Fiber Optic Sensors
- Luminescence Properties of Advanced Materials
- Advanced Measurement and Metrology Techniques
- Advanced Optical Sensing Technologies
- Laser Design and Applications
- Radiation Detection and Scintillator Technologies
- Atomic and Subatomic Physics Research
- Astronomical Observations and Instrumentation
- Optical Coherence Tomography Applications
- Agriculture, Soil, Plant Science
- Photonic and Optical Devices
- Terahertz technology and applications
- Optical measurement and interference techniques
- Spectroscopy and Laser Applications
- Bioactive Natural Diterpenoids Research
- High-Temperature Coating Behaviors
- Optical properties and cooling technologies in crystalline materials
- Optical Systems and Laser Technology
Chinese Academy of Sciences
2010-2024
Institute of Microelectronics
2019-2024
Hebei University of Science and Technology
2024
University of Chinese Academy of Sciences
2024
Beihang University
2016-2018
Shanghai Institute of Ceramics
2010-2016
Dual-comb spectroscopy holds the promise as real-time, high-resolution tools. However, in its conventional schemes, stringent requirement on coherence between two lasers requires sophisticated control systems. By replacing electronics with an all-optical dual-comb lasing scheme, a simplified scheme is demonstrated using one dual-wavelength, passively mode-locked fiber laser. Pulses intracavity-dispersion-determined repetition-frequency difference are shown to have good mutual and stability....
The evolution from asynchronous to synchronous dual-wavelength pulse generation in a passively mode-locked fiber laser is experimentally investigated by tailoring the intracavity dispersion. Through tuning intracavity-loss-dependent gain profile and birefringence-induced filter effect, soliton pulses can be generated until anomalous dispersion reduced ∼8 fs/nm. transition then observed at an elevated pump power presence of residual dispersion, it shown that are temporally synchronized...
A Ho:YAG ceramic microchip laser pumped by a Tm fiber at 1910 nm is passively Q-switched single- and multi-layer graphene, single-walled carbon nanotubes (SWCNTs), Cr2+:ZnSe saturable absorbers (SAs). Employing SWCNTs, this generated an average power of 810 mW 2090 with slope efficiency 68% continuous wave to Q-switching conversion 70%. The shortest pulse duration was 85 ns repetition rate 165 kHz, the energy reached 4.9 μJ. performance stability were superior compared graphene SAs even for...
A new absolute distance measurement system is demonstrated in this paper, which based on a dual-wavelength passive mode-locked fiber laser. By controlling the intracavity loss and spectral filtering, cavity by single-wall carbon nanotube saturable absorber able to generate two pulse trains at slightly different repetition rates simultaneously with high mutual coherence. Comparisons commercial interferometers located 80-m large-scale dimensional standard show combined uncertainty of 6 μ m + 1...
Lasers from Ho:YAG ceramic were reported in this paper. The slab was end-pumped by a Tm:YLF laser whose central wavelength 1.91 μm. At room temperature, with doping concentrations of 1 at.% slab, continuous wave output power 1.2 W at 2.09 μm obtained under the absorbed pump 5 W, corresponding to slope efficiency 42.6% and conversion 24%.
We report on a high power polycrystalline Er:YAG ceramic laser in-band pumped by cladding-pumped Er, Yb fiber wavelength locked at 1532 nm with volume Bragg grating. Using 1.0 % Er3+-doped as the gain medium and an output coupler of 10% transmission, had threshold pump ∼1.5 W generated 11 continuous-wave 1645 for 23.3 incident nm, corresponding to slope efficiency respect 51%.
Laser trackers are instruments used to measure the three-dimensional coordinates of objects with high precision. It is necessary study calibration methods identify geometric errors laser so as compensate for and improve measurement accuracy. Among offsets, tilts, eccentricity in system, transit tilt offset play important roles have an essential effect on accuracy, which need be calibrated compensated for. Current detecting between standing axes complex time-consuming. In this paper, a fast...
A doubly Q-switched (DQS) Ho:LuAG laser resonantly pumped by a 1.91-μm was first presented with an acoustic-optic modulator (AOM) and Cr2+:ZnS saturable absorber. comparison among the active (AQS), passively (PQS), DQS performances carried out. The maximum continuous wave (CW) output power of 6 W central wavelength 2100.65 nm obtained at incident pump 35.2 W. Compared CW laser, AQS, PQS, lasers shared same 2098.34 under power. AQS remained constant change AOM repetition frequency (RF). When...
A passively Q-switched Ho : YAP laser operating at room temperature with a Cr2+ ZnS saturable absorber pumped continuous wave Tm was demonstrated. comparative analysis of performances different output couplers first carried out. Using as the absorber, maximum average power 6.1 W obtained pump 32.1 W, pulse repetition frequency 7.5 kHz and width 93.6 ns. The central wavelength shifted to 2111.7 nm from operation 2118.7 nm. beam quality factor M2 1.4 on x-axis 1.6 y-axis diffraction limited quality.
We used gamma spectroscopy to study scintillation properties of the Pr3+-doped lutetium aluminium garnet material (LuAG:Pr). Characteristics LuAG:Pr optical ceramic samples (0.5-5 mol % Pr3+ content) are compared with those single crystal. Nphels photoelectron yield reaches up 30-40 that crystal, while their energy resolution values closer. Non-proportionality effect in is noticeably smaller respect crystal below 500 keV.
A diode-pumped passively Q-switched Tm, Ho:YVO4 laser with a Cr2+:ZnS saturable absorber was demonstrated. stable Q-switching operation achieved when the pump power changed from 3.7 to 6.5 W. pulse duration of nearly 100 ns generated at W, corresponding maximum average output 0.44 W repetition rate 2.9 kHz and energy 150 μJ.
A self-starting, dual-wavelength, dual-comb mode-locked fiber laser based on all polarization-maintaining parts and a carbon nanotube modelocker is demonstrated, dual-wavelength operation realized through spatial filtering facilitated by waveplates in the cavity.
Asynchronous ultrashort pulses generated by a dual-comb mode-locked fiber laser enable broadband microwave frequency measurement in real-time. Using compact and fiber-optic setup, an accuracy of 10−9 is achieved when measuring different CW signals.