Demonstration of a 2-ps transient x-ray laser

Klisnick, A.; Kuba, J.; Ros, D.; Smith, R. F.; Jamelot, G.; Chenais‐Popovics, C.; Keenan, R.; Topping, S.; Lewis, Ciaran; Strati, F.; Tallents, G. J.; Neely, D.; Clarke, R. J.; Collier, J.; MacPhee, A. G.; Bortolotto, Fulvia; Nickles, P. V.; Janulewicz, K. A.

doi:10.1103/physreva.65.033810

Cited by 83 publications

(39 citation statements)

References 21 publications

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“…The temporal smearing produced by the grating can further degrade the resolution of the measurements. 9,11 However, since the slit of the streak camera was placed 13 cm away from the image plane of the grating, its 25 m width sampled only a fraction of the wavefront, causing a negligible temporal smearing of 0.04 ps. The streakcamera sweep was synchronized with the soft x-ray laser using a photoconductor switch triggered with a 0.2 mJ, 50 fs duration Ti:sapphire laser pulse generated by a chirp-pulse amplification multipass amplifier seeded by the same laser oscillator that seeds the soft x-ray laser pump beam.…”

Section: -4mentioning

confidence: 99%

“…7,8 A few measurements of the pulse duration of these lasers have been recently conducted. [9][10][11] FWHM pulse durations of 2 -4 ps were reported for the 13.9 nm Ni-like Ag lasers pumped by 1.2-1.3 ps duration Nd:glass laser pulses. 9,10 Another experiment measured pulse durations of 4 -8 ps for a Ni-like Pd 14.7 nm laser pumped with Nd:glass pulses of 0.5-27 ps duration.…”

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Pulse duration measurements of grazing-incidence-pumped high repetition rate Ni-like Ag and Cd transient soft x-ray lasers

et al. 2006

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We have measured the pulse duration of gain-saturated 13.9 nm Ni-like Ag and 13.2 nm Ni-like Cd transient collisional lasers excited by grazing-incidence-pumping for several pumping conditions. Highresolution streak-camera measurements yielded FWHM pulse durations close to 5 ps for both lasers under optimum pumping conditions. The very high brightness and short pulse duration of these new high repetition tabletop soft x-ray lasers make them an attractive source for dynamic applications.

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Section: -4mentioning

confidence: 99%

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confidence: 99%

Pulse duration measurements of grazing-incidence-pumped high repetition rate Ni-like Ag and Cd transient soft x-ray lasers

et al. 2006

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“…Saturated x-ray lasing at wavelengths in the range 5.9 -30 nm [1,2] and with pulse durations down to ≈ 3 ps [3,4] has been produced in plasmas pumped by optical lasers. In these experiments, a first laser pulse incident onto a solid in a line focus creates a pre-formed plasma of Ne-or Ni-like ionization and a second pulse heats free electrons that produce population inversions by monopole electron collisional excitation.…”

Section: Introductionmentioning

confidence: 99%

“…From estimates of the frequency width of the gain coefficient of x-ray lasers, x-ray laser pulses of 3 ps duration are calculated to be close to the Fourier transform limit [3,4,8]. However, there has not been a direct measurement of the frequency bandwidth of x-ray laser output alongside a measurement of the pulse duration of the same x-ray laser pulses.…”

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X-ray laser pulses at the Fourier transform limit

2007

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The temporal output of a Ni-like Ag x-ray laser of wavelength 13.9 nm has been recorded using a streak camera with ultra-short (700 fs) temporal resolution. We present a model to calculate the degree of coherence and Fourier transform limit of xray laser pulses produced by amplified spontaneous emission and relate the results from the model to previous interferometric measurements of the coherence length of the same Ni-like Ag x-ray laser and our measured duration of temporal output. Our modeling shows that the interferometer and streak camera results are consistent and close to the Fourier transform limit at longer gain medium lengths.

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“…A short duration of lasing ;2-3 ps for Ni-like Ag has been measured with a fast streak camera~see Fig. 9 and Klisnick et al, 2002!. In Figure 9, the temporal resolution of the streak camera and spectrometer is estimated to be ;1 ps.…”

Section: Extending X-ray Lasers With Picosecond Pumpingmentioning

confidence: 99%

A review of X-ray laser development at Rutherford Appleton Laboratory

et al. 2002

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Recent experiments undertaken at the Rutherford Appleton Laboratory to produce X-ray lasing over the 5-30 nm wavelength range are reviewed. The efficiency of lasing is optimized when the main pumping pulse interacts with a preformed plasma. Experiments using double 75-ps pulses and picosecond pulses superimposed on 300-ps background pulses are described. The use of travelling wave pumping with the approximately picosecond pulse experiments is necessary as the gain duration becomes comparable to the time for the X-ray laser pulse to propagate along the target length. Results from a model taking account of laser saturation and deviations from the speed of light c of the travelling wave and X-ray laser group velocity are presented. We show that X-ray laser pulses as short as 2-3 ps can be produced with optical pumping pulses of '1-ps.

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Demonstration of a 2-ps transient x-ray laser

Cited by 83 publications

References 21 publications

Pulse duration measurements of grazing-incidence-pumped high repetition rate Ni-like Ag and Cd transient soft x-ray lasers

Pulse duration measurements of grazing-incidence-pumped high repetition rate Ni-like Ag and Cd transient soft x-ray lasers

X-ray laser pulses at the Fourier transform limit

A review of X-ray laser development at Rutherford Appleton Laboratory

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