Pulse duration of a partially coherent soft X-ray laser estimated from far-field speckle statistics

0501435 - FZÚ 2019 RIV US eng J - Článek v odborném periodiku
Albrecht, Martin - Kozlová, Michaela - Nejdl, Jaroslav
Pulse duration of a partially coherent soft X-ray laser estimated from far-field speckle statistics.
Optics Letters. Roč. 43, č. 19 (2018), s. 4586-4589. ISSN 0146-9592. E-ISSN 1539-4794
Grant CEP: GA MŠMT LQ1606
Institucionální podpora: RVO:68378271
Klíčová slova: UV, EUV, and X-ray lasers * X-rays, soft x-rays, * extreme ultraviolet * coherent optical effects * speck
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 3.866, rok: 2018

A novel method for estimating the pulse duration of partially coherent soft X-ray pulses from a far-field intensity pattern is presented. The method is based on intensity statistics at a single point in space and time, which allows the number of coherent longitudinal modes to be measured. Utilizing the knowledge of the coherence time of the radiation, either from the measurement of the spectral bandwidth or from numerical simulations, the duration of each individual pulse can be evaluated. This method was used to estimate the pulse duration of the laser-driven nickel-like molybdenum soft X-ray laser that is based on amplified spontaneous emission from a narrow plasma column and emits at a wavelength of 18.9 nm.
Trvalý link: http://hdl.handle.net/11104/0293470