Details

Autor(en) / Beteiligte

• Yampolskaya, S.A.
• Yastremskii, A.G.
• Panchenko, Yu.N.
• Puchikin, A.V.

Titel

Amplification of laser radiation at the edge of the KrF (B–X) spectral line

Ist Teil von

• Quantum electronics (Woodbury, N.Y.), 2022-05, Vol.52 (5), p.437-312

Ort / Verlag

Bristol: Kvantovaya Elektronika, Turpion Ltd and IOP Publishing

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Abstract We report the results of experimental and numerical studies of the KrF electric discharge amplifier operating on a mixture of He – Kr – F 2 gases. The possibility of expanding the short-wavelength spectral region of the induced radiation tuning at the B – X transition of the KrF molecule by removing the inverse population from the upper vibrational states of the electronic B level is shown. It is demonstrated that at the boundary of the active medium gain contour, the measured gain at a wavelength of 246.8 nm is 0.053 cm −1 . Using the developed 1D model of the KrF electric discharge amplifier, it is shown that when the active medium is excited by a pump pulse with a specific peak power of ∼10 MW cm −3 , the gain in this spectral region is due to a longer relaxation time of the population of excimer molecules from the upper vibrational levels compared with the characteristic time of their production.