Layout and performance of the Asterix IV iodine laser at MPQ, Garching

The absorption of soft X-rays by gold at density of ≈ 0.01 g/cm 3 and temperature of ≈ 20 eV has been measured in the photon energy range of 50 to 300 eV. For that purpose, a thin gold foil tamped by carbon was heated by thermal X-rays generated in a laser-irradiated gold cavity and probed by X-rays emitted by a synchronized tungsten backlighter source. The measured absorption was compared with numerical calculations based on the super-transitionarray model.

show abstract

“…Experiment. -The experiment has been performed with iodine laser ASTERIX IV [15]. The experimental setup (shown in fig.…”

mentioning

confidence: 99%

Measurement of the extreme UV opacity of a hot dense gold plasma

Eidmann¹,

Bar‐Shalom²,

Saemann³

et al. 1998

Europhys. Lett.

View full text Add to dashboard Cite

show abstract

“…So, our investigations with the use of gas puff targets have been carried out in scientific centres at Max-Planck-Institut fir Quantenoptik in Garching, Germany and at Ecole Polytechnique in Palaiseau, France. In experiments being made in Garching the high power iodine laser was used (see table 1) [28]. Lasing in the x-ray spectrum, clearly seen in neon-like argon ions (46.9 nm) and in nickel-like xenon ions (10 nm), was demonstrated [29,30].…”

Section: Laser Systems For Generation Of Coherent X-ray Radiationmentioning

confidence: 99%

Laser systems for generation of x-ray radiation

et al. 2000

View full text Add to dashboard Cite

Laser-produced plasma is an efficient source of x-ray radiation and has been widely used in science and technology.As a result of rapid development of x-ray optics during the last decades a significant increase in x-ray applications has been observed. In the paper we have described conditions of efficient generation of x-ray radiation from laser-produced plasma. These conditions determine characteristics of laser radiation to be used for plasma creation. We have discussed parameters of laser systems used for x-ray generation with respect to applications in lithography and microscopy. We have presented selected laser systems, which have been used for generation of non-coherent and coherent x-ray radiation.

show abstract

“…Whatever laser medium may be used, its spectral gain bandwidth must be as broad as possible to obtain the shortest final laser pulse; this fact is the basis for the chirped pulse amplification (CPA) technique first demonstrated in 1985 [1]. Several years later [2] the OPCPA technique made it possible to use lasers with a very narrow spectral bandwidth, such as the iodine photo-dissociation laser [3][4][5][6][7][8][9], the bandwidth of which at 1315 nm is λ ∼ 0.02 nm.…”

Section: Introductionmentioning

confidence: 99%

Mismatch characteristics of optical parametric chirped pulse amplification

Novák¹,

Turčičová²,

Divoký³

et al. 2013

Laser Phys. Lett.

View full text Add to dashboard Cite

The stability of an optical parametric chirped pulse amplifier (OPCPA) is influenced by time and the angular matching of the input beams. We derived the Gaussian dependence of the monochromatic signal gain on the small mismatch between the signal and pump beams. Gain characteristics were also calculated for polychromatic amplification and the impact of different beam mismatches and interaction geometries was explained. The asymmetry of the energy gain, and the square root dependence of the phase matched wavelength on beam angles were found. The predicted dependences were verified in a noncollinear OPCPA system with LBO and KDP crystal amplifying pulses of a Ti:sapphire laser around a central wavelength of 800 nm, pumped by the third harmonic frequency of an iodine gas laser at a wavelength of 438 nm. The widths of the gain curves in the dependence on both the pump-signal or the phase matching angles varied from several tenths to a few milliradians. The gain curve widths dependent on the pump-signal pulse delay were about two thirds of the pump pulse width for moderate pumping and about a half of the pump pulse width for pumping on the order of GW cm −2 . A stable gain output is achieved if angular and temporal fluctuations are fractions of the measured gain curve widths, and when the signal direction is between the pump and the crystal principal axis (i.e. in the psz geometry).

show abstract

Layout and performance of the Asterix IV iodine laser at MPQ, Garching

Cited by 29 publications

References 11 publications

Measurement of the extreme UV opacity of a hot dense gold plasma

Measurement of the extreme UV opacity of a hot dense gold plasma

Laser systems for generation of x-ray radiation

Mismatch characteristics of optical parametric chirped pulse amplification

Contact Info

Product

Resources

About