q-switched working material energy storage

Nanostructured energy materials for electrochemical energy conversion and storage…

Nanostructured energy materials with small size and tunable physical/chemical properties are promising candidates for rapid electron transportation and ion diffusion in a working energy storage device. Download : Download high-res image (256KB)Download : Download full-size image

High-performance mode-locked and Q-switched fiber lasers based on novel 2D materials …

Mode-locked and Q-switched lasers based on three 2D materials are reviewed. • Best specifications of bandwidth, repetition rate and pulse energy are summarized. • Material basic properties, fabrication …

High energy Q-switched Yb-doped fiber laser based on ternary …

The maximum output single Q switched pulse energy is as high as 169.8 nJ. Our experiments prove that the MAX phase Ti 2 AlC has potential as a low-cost, simple preparation, and broadband SA material.

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 …

Cascade generation at 162, 173 and 28 µm in the Er:YLF Q-switched …

11/2 radiation lifetime, ~4.8 msec [21], is long enough to provide adequate energy storage for Q-switched operation. Figure 1 shows an energy level scheme of Er:YLF from its ground

Q-switching

OverviewPrinciple of Q-switchingTypical performanceApplicationsSee also

Q-switching, sometimes known as giant pulse formation or Q-spoiling, is a technique by which a laser can be made to produce a pulsed output beam. The technique allows the production of light pulses with extremely high (gigawatt) peak power, much higher than would be produced by the same laser if it were operating in a continuous wave (constant output) mode. Compared to modelocking, another technique for pulse generation with lasers, Q-switching leads to much low…

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 …

Efficient passively Q switched lasers with a large-energy stored …

Ytterbium (Yb)-ions-doped sesquioxide crystal is an attractive gain medium for a tunable and pulsed laser owing to its high thermal conductivity. In particular, it has …

Nd:YAG, Mid-Infrared and Q-Switched Microchip Lasers Stability Analysis …

The device is a diode-pumped Nd:YAG laser that is passively Q-switched by a GaAs saturable absorber and intra-cavity frequency-doubled by a KTP crystal. One type is passive Q-switching of a diode-pump Nd:YAG laser with GaAs. Nonlinear losses in GaAs limit the obtainable pulse energies, especially at high peak powers.

Molecules | Free Full-Text | Highly Stable Passively Q-Switched Erbium-Doped All-Fiber Laser Based on Niobium Diselenide …

A saturable absorber (SA) based on niobium diselenide (NbSe2), which is a layered transition metal dichalcogenide (TMD) in the VB group, is fabricated by the optically driven deposition method, and the related nonlinear optical properties are characterized. The modulation depth, saturable intensity, and nonsaturable loss of the as …

Nanosecond Lasers

CNI Laser. CNI offer nanosecond Q-switched lasers with wavelength coverage from 223 nm to 4800 nm. We have versions with pulse energies from 1 μJ to 10 J, repetition rates from 1 Hz to 200 kHz and pulse width …

Research on pulse compression energy extraction technology based on X-band energy storage …

A high power microwave source based on energy storage switching pulse compression technology can produce a high power microwave pulse with good repeatability and frequency stability for a long time and has a good development prospect. In order to improve the power gain, this paper studies the workin …

4.4: Q-Switching

Active Q-Switching. Figure 4.5 shows the principle dynamics of an actively Q-switched laser. The laser is pumped by a pump pulse with a length on the order of the upper- state lifetime, while the intracavity losses are kept high enough, so that the laser can not reach threshold. Therefore, the laser medium acts as an energy storage.

Spatiotemporal pulses from a Q-switched multimode fiber laser

Fiber laser technology has developed rapidly in recent years due to its unique advantages. 1,2 Q-switching is a favorable technique for generating high energy pulses, especially in ytterbium-doped fiber lasers with high and broadband gain. 3–5 The generation of Q-switched pulses depends mainly on the repeated storage and dumping …

SOLID-STATE LASERS: Laser pulsing: The nuts and bolts of Q …

Key steps of the Q-switching process include the Q-switch state (cavity loss), energy storage, and output power as a function of time (see Fig. 1). At the start of …

Efficient passively Q switched lasers with a large-energy stored …

For CW laser operation, it generated the maximum output power of 8.68 W, corresponding to a slope efficiency up to 78.3%. Using Cr:YAG crystals as saturable absorbers, stable passive Q switching lasers were obtained with the Yb:LuScO 3 crystal. Both the CW and Q switched lasers operate on the strongest fluorescence emission …

Passively Q-switched Ytterbium-doped fiber laser based on broadband multilayer Platinum Ditelluride …

TMDs provided a wide choice of materials with various favorable properties 18,19,20 and which derived extensive applications, for example, photodetectors 21, biosensors 22 and energy storage 23.

Silicon photonics-based high-energy passively Q -switched laser

Chip-scale, high-energy optical pulse generation is becoming increasingly important as integrated optics expands into space and medical applications where miniaturization is needed. Q-switching of ...

High-energy single-longitudinal-mode Q-switched double …

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-B …

VS2 as saturable absorber for Q-switched pulse generation

Transition metal dichalcogenides have been widely utilized as nonlinear optical materials for laser pulse generation applications. Herein, we study the nonlinear optical properties of a VS 2 -based optical device and its application as a new saturable absorber (SA) for high-power pulse generation. Few-layer VS 2 nanosheets are deposited on the tapered region of a …

Storage Heaters Explained: How They Work, Costs and Benefits | OVO Energy

The main benefits of modern storage heaters are: They''re cheaper to run than other forms of peak-hour electrical heating systems. Modern storage heaters have some clever built-in features such as programmable timers, fans, and built-in thermostats. They''re exceptionally quiet, even the ones with a fan.

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 and fibre...

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 …

Actively Q-switched Tb:LiYF4 green lasers

In this work we have developed, for the first time to our knowledge, an actively Q-switched Tb:LiYF4 laser with emission directly into the green spectral region …

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 …

Efficient Q-switched Tm:YAG ceramic slab laser.

The shortest width of 69 ns was achieved with the pulse repetition frequency of 500 Hz and single pulse energy of 20.4 mJ, which indicates excellent energy storage capability of the Tm:YAG ceramic. Characteristics of Tm:YAG ceramic for high efficient 2-μm lasers are analyzed. Efficient diode end-pumped continuous-wave and Q …

Q-SWITCHED LASERS: Uses proliferate for high-energy picosecond …

Q-SWITCHED LASERS: Uses proliferate for high-energy picosecond UV lasers. July 1, 2009. High-energy, ultrashort-pulse ultraviolet lasers are useful for many practical applications—for example, fabrication of solar cells and flat-panel displays, 3-D information storage, cutting of thick sheets of material, photomask manufacturing, and …

Actively Q-switched Tb:LiYF4 green lasers

In addition, this result is much better than that obtained with the similar AO-Q-switched Pr:LiYF4 green laser (pumped at 444 nm and emitted at 522 nm, linear cavity) reported in,25)which was around 1% in terms of absorbed pump power at 7.7 kHz (pulse energy of 3.3 J and. μ. absorbed pump power of 2.4 W).

RESEARCH ARTICLE Diode-pumped, electro-optically Q …

pump fluence in a pulse pump approach for Tm:YAG to maximize the energy storage capability at a given pump power. Keywords: cryogenic condition; laser; Q-switch; short …

Nanosecond pulse generation in a passively Q-switched Nd:GGG …

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 …