Dramatic Enhancement of Optical-Field-Ionization Collisional-Excitation X-Ray Lasing by an Optically Preformed Plasma Waveguide

Chou, Ming-Dah; Lin, Po Hsun; Lin, Chih An; Lin, Jiunn‐Yuan; Wang, Jyhpyng; Chen, Shouyuan

doi:10.1103/physrevlett.99.063904

Cited by 34 publications

(15 citation statements)

References 22 publications

(20 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Laser effect and quantum yield were studied on the 4d-4p transition in Kr 8+ with λ = 32.8 nm [18,21]. In the present paper the choice of XRL in Xe 8+ is conditioned by the presence of experimental results obtained in the two different approaches [3][4][5].…”

Section: Discussionmentioning

confidence: 99%

“…In experiment [18], a krypton plasma waveguide was prepared by using the axicon-ignitor-heater scheme. in Ref.…”

Section: Justification Of the Use Of A Conical Mirror (Axicon) As mentioning

confidence: 99%

“…in Ref. [18] the XRL at 32.8 nm on the transition 3d 9 4d 1 S 0 -4d 9 4p 1 P 1 in Ni-like krypton was studied. A dramatic enhancement of XRL was achieved: 400 folds relative to the case without a plasma waveguide.…”

Section: Justification Of the Use Of A Conical Mirror (Axicon) As mentioning

confidence: 99%

See 2 more Smart Citations

Highly efficient tabletop x-ray laser atλ=41.8 nm in Pd-like xenon pumped by optical-field ionization in a cluster jet

Ivanova

2011

Phys. Rev. A

View full text Add to dashboard Cite

The atomic-kinetic calculations of gain at 41.8 nm in Pd-like xenon are performed. The interpretation of known experiments has proved that x-ray laser in Pd-like xenon is feasible in the extremely wide range of atomic densities: 10 17 [Xe 8+ ] 3 × 10 19 cm −3 . This result is due to the large cross sections (and rates) of level excitations in Pd-like xenon by electron impact. We propose a highly efficient tabletop x-ray laser pumped by optical-field ionization in a xenon cluster jet. The efficiency of ∼0.5% is possible with a pump laser pulse energy of 0.001 J and an intensity of ∼10 16 W/cm 2 .

show abstract

Section: Discussionmentioning

confidence: 99%

“…In experiment [18], a krypton plasma waveguide was prepared by using the axicon-ignitor-heater scheme. in Ref.…”

Section: Justification Of the Use Of A Conical Mirror (Axicon) As mentioning

confidence: 99%

See 1 more Smart Citation

Highly efficient tabletop x-ray laser atλ=41.8 nm in Pd-like xenon pumped by optical-field ionization in a cluster jet

Ivanova

2011

Phys. Rev. A

View full text Add to dashboard Cite

show abstract

“…In addition, the laser at 46.9 nm was realized with a traveling-wave excitation scheme [21] and an optical field ionization scheme [22]. However, the two J = 2-1 lines at 69.8 nm and 72.6 nm were not observed in these laser produced plasmas.…”

Section: Introductionmentioning

confidence: 95%

Characteristics of a multi-wavelength Ne-like Ar laser excited by capillary discharge

et al. 2016

View full text Add to dashboard Cite

other applications. In 1994, J. J. Rocca et al. reported the first demonstration of large soft X-ray amplification in the plasma of a capillary discharge [1]. A population inversion between 2p 5 3p 1 S 0 and 2p 5 3s 1 P 1 (J = 0-1) in the Ne-like Ar ions was produced by the electron collisional excitation, and the gain coefficient at 46.9 nm (A line) was measured as 0.6 cm −1 . A saturated Ne-like Ar soft X-ray laser at 46.9 nm pumped by capillary discharge has produced millijoule-level laser pulses at a repetition rate of 4 Hz [2] and has led to many applications such as the diagnostics of dense plasma [3], lithography [4], nanoimaging [5], nanomachining [6] and material ablation [7].Other groups also had developed 46.9 nm laser pumped by capillary discharge [8][9][10][11][12][13][14][15][16]. Some groups studied the 46.9 nm laser with a low current, which is benefit to reduce the size and enhance the repetitive frequency of the laser. G. Niimi et al. firstly reported the observation of 46.9 nm laser output at a low discharge current of 9 kA [8]. G. Tomassetti et al. reported that 46.9 nm laser was realized with low amplitude 17-20 kA current pulses at pulse repetition rate up to 0.1 Hz [9]. The saturated laser at 46.9 nm was achieved by C. A. Tan et al. using the main current as low as 16 kA [13]. However, the other Ne-like Ar lasers were not observed by these groups.Except for J = 0-1 transition at 46.9 nm, EUV lasers can also be expected on some other 3p-3s transitions of Ne-like Ar in principle. The populations and gain coefficients of the 3p-3s transitions in Ne-like Ar were investigated by D. E. Kim et al. in theory [17]. It was found that large gains on the 3p 1 S 0 -3s 1 P 1 (J = 0-1), 3p 3 P 2 -3s 1 P 1 (J = 2-1) and 3p 3 D 2 -3s 3 P 1 (J = 2-1) transitions were formed for the electron density between 10 18 and 10 19 cm −3 . Due to the observation of intense laser on 3p 1 S 0 -3s 1 P 1 (J = 0-1) transition at 46.9 nm (A line), the two other lasers on 3p 3 P 2 -3s 1 P 1 (J = 2-1) transition at 69.8 nm (C line) and 3pAbstract We report the characteristics of 46.9, 69.8 and 72.6 nm lasers of Ne-like Ar in a plasma column pumped by capillary discharge. A main current of 12 kA with rise time of 40 ns was used to generate the plasma in a 35-cmlong capillary. The temporal and spatial characteristics of 46.9 and 69.8 nm laser pulses were measured. The time of lasing onset for the two lasers is about 35 ns. The pulse widths are about 1.3 ns for 46.9 nm laser and 1.2 ns for 69.8 nm laser. The FWHM beam divergences of the 46.9 and 69.8 nm lasers are approximately 0.5 and 0.4 mrad, respectively. The initial pressure ranges for 46.9, 69.8 and 72.6 nm lasers correspond to 13-24, 12.5-20 and 14-20 Pa, respectively. A gain coefficient of 0.58 cm −1 was measured and gain saturation behavior was observed at 46.9 nm, conditioning the initial pressure of 19 Pa. At the same discharge current, a 69.8 nm laser with gain coefficient of 0.41 cm −1 and a 72.6 nm laser with gain coefficient of 0.22 cm −1 were achieved by changing...

show abstract

“…In the past two decades, the advancement of high-intensity laser technology has opened new frontiers of scientific research, including extreme-UV and soft X-ray lasers [1][2][3][4][5], high-harmonic generation [6][7][8][9][10], laser-wakefield electron accelerators [11][12][13][14], channel-betatron X-ray sources [15][16][17], laser-driven proton and ion accelerators [18][19][20], and prospective relativistic laboratory astrophysics [21]. Based on the technique of chirp-pulse amplification (CPA) [22], the technology of table-top 100-TW-class laser is being developed continuously [23][24][25][26][27][28][29][30][31][32][33][34], and lasers with petawatt peak power are built at large research centers [35][36][37][38][39][40][41][42][43][44].…”

Section: Introductionmentioning

confidence: 99%

A 110-TW multiple-beam laser system with a 5-TW wavelength-tunable auxiliary beam for versatile control of laser-plasma interaction

et al. 2014

View full text Add to dashboard Cite

A Ti:sapphire laser system has been constructed with two synchronized main beams of 110 TW and 13 TW, and a 5-TW wavelength-tunable synchronized auxiliary beam for versatile control of laser-plasma interaction. The first main beam provides 3.3-J, 30-fs, 810-nm pulses, and the second 450-mJ, 34-fs, 805-nm pulses. The auxiliary beam comes from amplified spectral windows selected from a supercontinuum of high spatial coherence and provides 38-fs pulses with tunable wavelengths (870-920 nm). The two main beams can be focused down to M 2 = 1.2 and 1.1, with 77 and 81 % energy enclosed in the focal spots, respectively. The energy fluctuations are 1.1 and 1.8 %, and the pointing fluctuations are 4.5 and 4.8 lrad, respectively. By using a preamplifier and saturable absorber before the pulse stretcher to suppress amplified spontaneous emission, the temporal contrast of the 110-TW main beam reaches 4 Â 10 À10 at the -100-ps timescale. Even though the auxiliary beam is generated from a highly nonlinear process, by confining the supercontinuum generation in a single self-trapping filament, a spatial coherence close to the main beams can be achieved. It can be focused down to M 2 = 1.3, with 72 % energy enclosed in the focal spot. The energy fluctuation is 2.6 %, and the pointing fluctuation is 4.7 lrad. The versatility of synchronized multiple-beams with tunable wavelengths, good energy and pointing stability, and the spatiotemporal quality of the laser system has been essential to our experiments in high-harmonic generation, extreme-UV lasers, and laser-wakefield accelerators in which precision control of laser-plasma interaction is facilitated by a concerted sequence of driving pulses.

show abstract

Dramatic Enhancement of Optical-Field-Ionization Collisional-Excitation X-Ray Lasing by an Optically Preformed Plasma Waveguide

Cited by 34 publications

References 22 publications

Highly efficient tabletop x-ray laser atλ=41.8 nm in Pd-like xenon pumped by optical-field ionization in a cluster jet

Highly efficient tabletop x-ray laser atλ=41.8 nm in Pd-like xenon pumped by optical-field ionization in a cluster jet

Characteristics of a multi-wavelength Ne-like Ar laser excited by capillary discharge

A 110-TW multiple-beam laser system with a 5-TW wavelength-tunable auxiliary beam for versatile control of laser-plasma interaction

Contact Info

Product

Resources

About