In this paper, self-Q-switched (SQS) and passively Q-switched mode-locked (QML) dual-wavelength Nd:YSAG lasers are reported, that works at 1058.97 and …
Q-switching of the laser cavity is the best known technique for generating high-energy pulses, and typically such systems are in the realm of large bench-top solid-state lasers …
This paper presents the performance comparison and transfer efficiency modeling and analysis of a 2-quadrant switched capacitor converter (2-Q SCC), a 4-Q SC Luo converter and interleaved SCC, applicable for hybrid electric and plug-in hybrid electric vehicles (PHEV) Energy storage system (ESS) applications. SCCs offer essential features of …
With Cr:YAG as the saturable absorber, efficient passively Q switched lasers with a slope efficiency of 45% were obtained with the pulse width, pulse energy, and peak power of 5.9 ns, 116 µJ, and 18.5 kW, …
Abstract. In order to meet the requirements of high amplitude and high speed of electro-optic Q-switch voltage, a high speed electro-optic Q-switch circuit for aerospace applications is designed. According to the principle of Marx generator, the circuit uses a high speed driving chip to drive the switching transistor to conduct.
Here we demonstrate a high-energy silicon photonics-based passively Q-switched laser with a compact footprint using a rare-earth gain-based large-mode-area waveguide. We demonstrate high on-chip output pulse energies of >150 nJ and 250 ns pulse duration in a single transverse fundamental mode in the retina-safe spectral region (1.9 µm), with a …
Energies 2019, 12, 2726 5 of 15 Figure 4. Working principle of the proposed balancing system. (a) ZCS mode state I; (b) ZCS modestate II; (c) buck-boost mode state I; (d) buck-boost mode state II.2.3. Analysis of ZCS Operation When the switches Sa 2m 1, S band Sa +, and S are turned on, the circuit forms the ...
In particular, it has been identified that Yb:LuScO 3 has the largest energy storage property compared with other sesquioxide crystals, which is favorable for passive …
We report on laser diode (LD) pumped passively Q-switched Yb,Gd:SrF 2 lasers with high single-pulse energy for the first time, to the best of our knowledge. In addition, a stable Q …
In the Q-switched mode, single pulse output energy is obtained around 57 mJ with 10 ns pulse duration over 1–20 Hz pulse repetition rates. The optical to optical conversion efficiency reaches 14 ...
Q -switching of the laser cavity was historically the first technique to generate high-energy pulses, and typically such systems are in the realm of large bench …
switched high energy laser with ber-laser level performance. Our LMA design is based on a single thick silicon nitride layer that allows tighter bends for compact …
We demonstrate CMOS-compatible, integrated, high energy Q-switched lasers in the eye-safe window (1.9 µm), with an on-chip output pulse energy of 80 nanojoules at a repetition rate of <1 MHz...
Abstract: We demonstrate CMOS-compatible, integrated, high energy Q-switched lasers in the eye-safe window (1.9 µm), with an on-chip output pulse energy of 80 nanojoules at a …
Third, to increase the storage per footprint, the superlattices are conformally integrated into three-dimensional capacitors, which boosts the areal ESD nine times and the areal power density 170 ...
, Q,,。 (1.9 µm) …
cceptable) [12-15], a high energy pulsed laser can play a key role. For example, Q-switched lasers are used in laser surgery for precise cutting o. biological tissue, such as in ophthalmic and spinal surgery [5-8]. They are used in the food, semiconductor and electronics industries for humidity control, and in differential absorption LIDAR for.
Actively Q-switched laser with novel Nd:YAG/YAG polygonal active-mirror Ye Lang, Yanzhong Chen, Wenqi Ge et al. ... cascaded discharge is carried out on the energy storage capacitors of the 8th order Marx generator circuit, thereby outputting high that the ...
Energies 2019, 12, 2726 5 of 16 (c) (d) Figure 4. Working principle of the proposed balancing system. (a) ZCS mode state I; (b) ZCS mode state II; (c) buck-boost mode state I; (d) buck-boost mode state II.2.3. Analysis of ZCS Operation When the switches Sa2m−1, Sb2m−1 and Sa2m+1, and Sb2m+1 are turned on, the circuit forms the switched ...
It distinctly charged the 10 μF capacitor to 1.68 V in a time of 30 s and it lighted up a series of 92 LEDs connected to shape "VNU VMINA" during the tapping state. Our research provides an effective and direct writing …