Liquid jet-based broadband terahertz radiation source

Ismagilov, Azat; Ponomareva, Evgenia A.; Zhukova, Maria; Putilin, S. É.; Nasedkin, B. A.; Tcypkin, Anton

doi:10.1117/1.oe.60.8.082009

Cited by 12 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are mainly two geometries of liquid flow proposed previously: plane geometry (such as free-flowing liquid films [43] and liquid films created by flat jets [50,51,127–129] ) and cylindrical geometry such as liquid lines [130–134] . The advantage of the free-flowing water film, as used in the first demonstration of THz wave generation from liquid water [43] , is that the water film can be made less than 20 µm in thickness, depending on the diameter of the metal wires and the distance between them.…”

Section: Plasma-based Thz Wave Photonics In Liquid Phasementioning

confidence: 99%

“…Many previous works on THz wave generation in liquid also used laser pulses with a 1-kHz repetition rate, since the sampling rate is relatively higher than those with 10-20 Hz laser systems. It is noteworthy that the water temperature can affect the efficiency of THz wave generation [51] . Three major approaches are utilized to minimize the impact of laser heating on THz wave generation efficiency: first, a relatively large flow rate of the water line (6-7 mm/ms) is needed to avoid the local heating effect; second, the total volume of water (total heat capacity) in the circulation system needs to be large enough to ensure that the overall heating effect is negligible; and third, a chiller is used to control the water temperature directly at the expense of system complexity [51] .…”

Section: Experimental Setup and General Considerationsmentioning

confidence: 99%

“…More recently, liquids, for example, liquid water [43–46] , liquid nitrogen [47,48] , liquid metal [49] , ethanol, and acetone [50,51] , have been proven to be prospective broadband THz sources due to their lower ionization threshold and higher molecular density, in comparison with those in gas phase. Benefiting from the fluidity of liquids, liquid flows of different geometries have been utilized as laser targets to provide a fresh zone between adjacent pump laser pulses, mitigating the laser damage issue that has been suffered in the case of solid targets for many years.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Plasma-based terahertz wave photonics in gas and liquid phases

Chen

Liu

et al. 2023

Photonics Insights

View full text Add to dashboard Cite

Ultra-broadband, intense, coherent terahertz (THz) radiation can be generated, detected, and manipulated using laser-induced gas or liquid plasma as both the THz wave transmitter and detector, with a frequency coverage spanning across and beyond the whole "THz gap." Such a research topic is termed "plasma-based THz wave photonics in gas and liquid phases." In this paper, we review the most important experimental and theoretical works of the topic in the non-relativistic region with pump laser intensity below 10 18 W∕cm 2 .

show abstract

Section: Plasma-based Thz Wave Photonics In Liquid Phasementioning

confidence: 99%

Section: Experimental Setup and General Considerationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Plasma-based terahertz wave photonics in gas and liquid phases

Chen

Liu

et al. 2023

Photonics Insights

View full text Add to dashboard Cite

show abstract

“…The double-pump scheme increases terahertz emission via preformed plasma created by the first pump [ 14 ]. As for the optimization of target materials, many kinds of liquids have been explored, such as heavy water, acetone, α-Pinene, ethanol, and liquid nitrogen [ 19 , 20 , 21 , 22 ]. However, as a transparent target, terahertz radiation from a liquid saturates with the laser intensity because of the intensity clamping effect [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Terahertz Emission by Silver Nanoparticles in a Liquid Medium

et al. 2023

View full text Add to dashboard Cite

Due to higher molecular density, lower ionization potential, and a better self-healing property compared with gases, liquid targets have been used for laser-induced terahertz generation for many years. In this work, a liquid target used for terahertz radiation is embedded with silver nanoparticles (Ag NPs), which makes the material have both the fluidity of liquids and conductivity of metals. Meanwhile, the experimental setup is easier to implement than that of liquid metals. Polyvinyl alcohol (PVA) is used as a stabilizing agent to avoid precipitation formation. It is observed that the power of 0.5 THz radiation from the Ag NP suspension is five times stronger than that from liquid water in identical experimental conditions. In addition, the reusability of the material is investigated using multiple excitations. UV–visible spectroscopy and TEM imaging are carried out to analyze the target material after each excitation. As a result, quasispherical Ag NP suspensions show good reusability for several excitations and only a decrease in particle concentration is observed. By contrast, the chain-like Ag NP suspension shows poor stability due to PVA damage caused by intense laser pulses, so it cannot be used in a recyclable manner.

show abstract

“…Dey et al reported THz wave generation from ionized liquids by focusing intense laser into a cuvette [11]. With successive studies [12][13][14][15][49][50][51], THz wave generation from liquids shows different properties comparing to that from other targets. In this paper, we review recent studies of THz wave generation from flowing liquid targets as well as the ultrafast dynamics of liquids under intense THz excitation.…”

Section: Introductionmentioning

confidence: 99%

Broadband THz Sources from Gases to Liquids

et al. 2021

View full text Add to dashboard Cite

Matters are generally classified within four states: solid, liquid, gas, and plasma. Three of the four states of matter (solid, gas, and plasma) have been used for THz wave generation with short laser pulse excitation for decades, including the recent vigorous development of THz photonics in gases (air plasma). However, the demonstration of THz generation from liquids was conspicuously absent. It is well known that water, the most common liquid, is a strong absorber in the far infrared range. Therefore, liquid water has historically been sworn off as a source for THz radiation. Recently, broadband THz wave generation from a flowing liquid target has been experimentally demonstrated through laser-induced microplasma. The liquid target as the THz source presents unique properties. Specifically, liquids have the comparable material density to that of solids, meaning that laser pulses over a certain area will interact with three orders more molecules than an equivalent cross-section of gases. In contrast with solid targets, the fluidity of liquid allows every laser pulse to interact with a fresh area on the target, meaning that material damage or degradation is not an issue with the high-repetition rate intense laser pulses. These make liquids very promising candidates for the investigation of high-energy-density plasma, as well as the possibility of being the next generation of THz sources.

show abstract

Liquid jet-based broadband terahertz radiation source

Cited by 12 publications

References 0 publications

Plasma-based terahertz wave photonics in gas and liquid phases

Plasma-based terahertz wave photonics in gas and liquid phases

Enhancement of Terahertz Emission by Silver Nanoparticles in a Liquid Medium

Broadband THz Sources from Gases to Liquids

Contact Info

Product

Resources

About