q-switched laser working material energy storage
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Applied Sciences | Free Full-Text | Diode-Pumped Solid …
We report a solid-state passively Q-switched Nd:YVO4 laser adopting rhenium diselenide (ReSe2) as saturable absorber (SA) materials. ReSe2 belongs to a type of transition metal dichalcogenides (TMDs) materials …
HfSe2-based Q-switched fiber laser with large energy pulse
The HfSe 2 material serves as SA to generate large energy pulses, which are exfoliated into layered nanosheets and dispersed in deionized water. Then, the HfSe 2 /polyvinyl alcohol (PVA) SA is obtained, whose modulation depth (ΔT) is 12.37 %. After embedding HfSe 2 /PVA into Er-doped fiber (EDF) cavity, passively Q-switching fiber …
Q Switched Laser
Finally, in a more recent work, the same approach enabled Q-switched operation of an Y 2 O 3:Yb 3+ slab waveguide laser at 1.47 MHz, by pumping at 975 nm with a broad area diode laser. The source yielded 456 mW of average output power for an absorbed pump power of 4.1 W and pulses 158-ns in duration with peak power and energy of 1.96 W …
Laser irradiation construction of nanomaterials toward electrochemical energy storage …
1 INTRODUCTION The rapid depletion of fossil energy, along with the growing concerns for energy crisis and environmental pollution, has become a major world challenge at present. 1-4 Renewable energy, including wind, solar, and biomass energies, has been extensively explored to accelerate the sustainable development of the society. 5, 6 Recently, the …
High-energy Q-switched Nd:YAG oscillator and amplifier …
Nd:YAG is a high-gain, high energy storage laser material that offers high-energy Q-switched pulse formation. To achieve high energy pulses capable of long range detection, a master oscillator power amplifier (MOPA) is …
High energy Er-doped Q-switched fiber laser with WS2 …
Abstract. The report presents a stable Q-switched Er-doped fiber (EDF) laser with WS 2 -based saturable absorber (SA). The SA is obtained by mixing WS 2 dispersion with polyvinyl alcohol (PVA) into polystyrene cells, and then evaporating them to form WS 2 /PVA film. The modulation depth (MD) of WS 2 /PVA is 2% and the saturable …
Nanomaterials | Free Full-Text | Ag/MXene as Saturable Absorber for Tm:Ho Co-Doped Q-Switched Fiber Laser …
Q-switched fiber lasers have become reliable light sources for generating high-energy pulses, which can be passively modulated by saturable absorbers with excellent nonlinear optical properties. The composite combining Ag and MXene exhibits a broadband nonlinear response and high modulation depth, making it a promising …
Q Switching
Q switching is a technique for obtaining energetic short (but not ultrashort) light pulses from a laser by modulating the intracavity losses and thus the Q factor of the laser resonator. The technique is mainly applied for the …
Micromachines | Free Full-Text | Passively Q-Switched Er-Doped Fiber Laser …
This paper presents the investigations toward the direct use of bentonite clay (Al2H2O6Si) nanoparticles to act like a saturable absorber (SA) for the Q-switched pulse operation of an erbium-doped fiber laser (EDFL). The measured results reveal that with the incorporation of bentonite clay nanopowder as a SA, an EDFL is realized with a …
High-performance 1.06 μm continuous-wave and passive Q-switched laser …
Zhou et al. report a passive Q-switched 1.06 μm Nd 3+: Ca 3 TaGa 3 Si 2 O 14 (Nd: CTGS) laser with a peak power of 5.4 kW, pulse energy of 45.7 μJ and pulse width of 8.4 ns [14]. Zhao et al. reported a 13.24 kW peak power self-frequency doubling Nd: CTGS laser (centered at 533 nm); the corresponding single pulse energy and pulse …
High-energy single-longitudinal-mode Q-switched double-cladding fiber laser …
This paper demonstrates a high-energy, single-longitudinal-mode (SLM), actively Q-switched fiber laser based on the injection seeding technique. The large-mode-area double-cladding fiber is used as the gain medium to improve energy storage. Simultaneously, by using the linear electro-optic effect of the negative uniaxial crystal (β …
HfSe2-based Q-switched fiber laser with large energy pulse
In this study, we demonstrate an all-fiberized Q-switching EDF laser. The HfSe 2 material serves as SA to generate large energy pulses, which are exfoliated into layered nanosheets and dispersed in deionized water. Then, the HfSe 2 /polyvinyl alcohol (PVA) SA is obtained, whose modulation depth (ΔT) is 12.37 %.
Efficient passively Q switched lasers with a large-energy stored …
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 …
Understanding Actively Q-Switched Solid-State Lasers
Storing excitation energy. The pump phase should not last much longer than the upper-state lifetime of the gain medium – otherwise, much of the energy is lost via spontaneous emission. At high laser gains, amplified …
7.9 Short pulse generation by Q-Switching
The energy stored in the laser medium can be released suddenly by increasing the Q-value of the cavity so that the laser reaches threshold. This can be done actively, for example …
Pulse energy enhancement in a Passively Q-switched …
While for a PQS laser aiming at high pulse energy, large emission cross-section is not beneficial for promoting the energy storage capacity. Except the emission …
Silicon photonics-based high-energy passively Q -switched laser
An integrated high-energy laser that combines a passively Q-switched laser cavity based on a silicon-nitride photonic integrated circuit with an optically pumped gain layer consisting of...
Pulse energy enhancement in a Passively Q-switched Yb:Lu0.74Y0.23La0.01VO4 laser …
Recently, two dimensional (2D) nano-materials have been paid great attention as optical modulators in passive Q-switched (PQS) lasers, which opened a new era for 2D materials applications. There is a wide variety of 2D materials available for PQS laser modulators, such as graphene [4], [5], topological insulators [6], [7], black …
Q,Nature Photonics
Q,, >1.8 µm,。
High-energy Q-switched Nd:YAG oscillator and amplifier …
Nd:YAG is a high-gain, high energy storage laser material that offers high-energy Q-switched pulse formation. To achieve high energy pulses capable of long …
Cryogenically cooled, Ho:YAG, Q-switched laser | Request PDF
By using a langasite (La3Ga5SiO14, LGS) crystal as the EO Q-switch, at a pulse repetition frequency of 3 kHz, the EO Q-switched Ho:LuVO4 laser produced a maximum pulse energy of 3.2 mJ and a ...
Setup of the Q -switched Er:YAG laser. | Download Scientific …
Chunqing Gao. Resonantly pumped acousto-optic Q -switched Er:YAG lasers at 1617 and 1645 nm are demonstrated. An etalon was used to obtain 1617 nm output. Laser pulses with 4.02 mJ energy at 1617 ...
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Cavity loss, stored energy, and output power are plotted as a function of time in a Q-switched laser cavity (bottom); the dashed vertical lines denote one cycle of …
High energy passively Q-switched laser on a CMOS platform
In this work, we show CMOS compatible Q-switched laser around 1.9 µm with an on-chip output energy over 150 nJ in a footprint <10 mm2. The pulse energy demonstrated in this work is comparable to passively Q-switched fibre lasers [6]. KW - 2024 OA
Laser-Tissue Interaction in Tattoo Removal by Q-Switched Lasers
The three short-pulsed, high-intensity, and pigment-selective QS lasers widely used today for tattoo removal are the following: The Q-switched ruby laser (QSRL) — the QSRL emits light at a wavelength of 694 nm and has a pulse duration of 28-40 ns. The Q-switched alexandrite laser (QSAL) — the QSAL has a near infrared wavelength of 755 nm ...
Nanosecond pulse generation in a passively Q-switched Nd:GGG laser …
166.7kHz with corresponding maximum pulse energy 4.14μJ and pulse peak power 7.45W. This is the first demonstration of CVD-graphene-based Q-switched laser operation at 1.3μm, to the best of our knowledge. Keywords: solid-state lasers, Q …
Silicon photonics-based high-energy passively Q-switched laser
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-top solid-state lasers …
Ag/MXene as Saturable Absorber for Tm:Ho Co-Doped Q-Switched Fiber Laser
Conclusions. In this work, a Ag/MXene composite was utilized as an SA in a Tm:Ho co-doped fiber laser, where Q-switched pulses were obtained. At the pump power of 180 mW, the output power and pulse energy of stable pulses were 0.86 mW and 25.5 nJ with the repetition rate of 33.7 kHz.
Q Switching
Q switching is a technique for obtaining energetic short (but not ultrashort) light pulses from a laser by modulating the intracavity losses and thus the Q factor of the laser resonator.The technique is mainly applied for the generation of nanosecond pulses of high energy and peak power with solid-state bulk lasers. ...
Chip-scale, CMOS-compatible, high energy passively Q-switched laser …
Chip-scale, CMOS-compatible, high energy passively Q-switched laser Neetesh Singh 1*, Jan Lorenzen 1,2, Milan Sinobad 1, Kai Wang 3, Andreas C. Liapis 4, Henry Frankis 5, Stefanie Haugg 6, Henry Francis 7, Jose Carreira 7, Michael Geiselmann 7, Mahmoud A. Gaafar 1, Tobias Herr 1, Jonathan D.