Saturated and Short Pulse Duration X-Ray Lasers

Tallents, G.J.; Abou‐Ali, Y.; Edwards, M. J.; King, Robert; Pert, G.J.; Pestehe, S.J.; Strati, F.; Keenan, R.; Lewis, C.L.S.; Topping, S.; Guilbaud, Olivier; Klisnick, A.; Ros, D.; Clarke, R. J.; Neely, D.; Notley, M.

doi:10.1063/1.1521033

Cited by 7 publications

(4 citation statements)

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“…Each point is the average of about ten laser shots and the error bars correspond to plus-minus one standard deviation. The data was fit with an analytic expression for the output laser intensity taking into account gain saturation [16]. The resulting gain coefficient is 65 cm , slightly larger than the value previously measured for 14 grazing incidence pumping in the same setup [14].…”

Section: Laser Characteristics and Demonstrationmentioning

confidence: 99%

Characteristics of a Saturated 18.9-nm Tabletop Laser Operating at 5-Hz Repetition Rate

Larotonda

Luther

Wang

et al. 2004

IEEE J. Select. Topics Quantum Electron.

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Abstract-We report the characteristics of a saturated high-repetition rate Ni-like Mo laser at 18.9 nm. This table-top soft X-ray laser was pumped at a 5-Hz repetition rate by 8-ps 1-J optical laser pulses impinging at grazing incidence into a precreated Mo plasma. The variation of the laser output intensity as a function of the grazing incidence angle of the main pump beam is reported. The maximum laser output intensity was observed for an angle of 20 , at which we measured a small signal gain of 65 cm 1 and a gain-length product 15. Spatial coherence measurements resulting from a Young's double-slit interference experiment show the equivalent incoherent source diameter is about 11 m. The peak spectral brightness is estimated to be of the order of 1 10 24 photons s 1 mm 2 mrad 2 within 0.01% spectral bandwidth. This type of practical, small scale, high-repetition soft X-ray laser is of interest for many applications.Index Terms-Grazing incidence pumping, high-repetition rate, nickel-like Mo, X-ray laser.

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Section: Laser Characteristics and Demonstrationmentioning

confidence: 99%

Characteristics of a Saturated 18.9-nm Tabletop Laser Operating at 5-Hz Repetition Rate

Larotonda

Luther

Wang

et al. 2004

IEEE J. Select. Topics Quantum Electron.

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“…Figure 4 shows the variation of the laser intensity of the 30.4 nm line of the Ne-like V as a function of plasma length. The solid line represents a fit of the data with the expression derived by Tallents et al for the variation of the laser intensity with plasma length taking into account gain saturation [15]. For short plasma lengths the laser output intensity is observed to increase exponentially with a small signal gain coefficient of g = 72 cm -1 , until saturation is reached.…”

Section: Resultsmentioning

confidence: 95%

High repetition rate operation of saturated tabletop soft x-ray lasers in transitions of neon-like ions near 30 nm

Alessi¹,

Luther²,

Wang³

et al. 2005

Opt. Express

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Abstract:We report average powers exceeding 1 microwatt in laser transitions of Ne-like ions at wavelengths near 30 nm. Gain-saturated operation was obtained at a repetition rate of 5 Hz exciting solid targets with pump pulses of ~1 J energy and 8 ps duration impinging at grazing incidence of 20 degrees. Gain-length products of about 20 were obtained in the 30.4 nm and 32.6 nm transitions of Ne-like V and Ne-like Ti respectively. Strong lasing was also observed in Ne-like Cr at 28.6 nm and in the 30.1 nm line of Ne-like Ti.

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“…Saturation of the gain is observed to have an onset at a plasma-column length of approximately 5.5 mm. A fit of the data with an expression for the gain that takes into account saturation [25] yields a gain coefficient of 27.3 cm-1 with a gain-length product of 16.6. The energy of the most intense Sm laser pulses was estimated to be ~ 1.8 µJ from the CCD counts, a value that is sufficient to perform single shot imaging [26].…”

Section: Resultsmentioning

confidence: 99%

Demonstration of Multi-Hz repetition rate x-ray lasers at shorter wavelengths

Rocca

Rockwood

Wang

et al. 2021

International Conference on X-Ray Lasers 2020

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Compact, repetitively fired, gain-saturated x-ray lasers have been limited to wavelengths above λ=8.85 nm. Here we discuss their extension to λ = 6.85 nm by transient traveling wave excitation of Ni-like Gd ions in a plasma created with an optimized pre-pulse followed by rapid heating with an intense sub-ps pump pulse. Isoelectronic scaling also produced strong lasing at 6.67 nm and 6.11 nm in Ni-like Tb, and amplification at 6.41 nm and 5.85 nm in Ni-like Dy.

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Saturated and Short Pulse Duration X-Ray Lasers

Cited by 7 publications

References 0 publications

Characteristics of a Saturated 18.9-nm Tabletop Laser Operating at 5-Hz Repetition Rate

Characteristics of a Saturated 18.9-nm Tabletop Laser Operating at 5-Hz Repetition Rate

High repetition rate operation of saturated tabletop soft x-ray lasers in transitions of neon-like ions near 30 nm

Demonstration of Multi-Hz repetition rate x-ray lasers at shorter wavelengths

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