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Most of strong-field experiments such as high harmonic generation (HHG), attosecond pulse generation, and their applications rely on femtosecond Ti:sapphire lasers around 800 nm. Currently the photon energy range in HHG is limited to 200 eV or less for spectroscopic applications. To overcome this barrier, an IR source is promising because the ponderomotive potential is proportional to the square of...
A 3.0-mm-thick KBe 2BO3F2 (KBBF) crystal has been successfully grown and used to fabricate a right angle prism. Its refractive indices were accurately measured with a prism technique at seven wavelengths from 0.4047 to 0.6562 mum . Its phase-matching characteristics in deep-ultraviolet (UV) region were investigated. Using the measured indices and phase-matching angles from deep-UV to near infrared,...
We theoretically show that the effects of the carrier-envelope-phase is significant even in the multiphoton ionization regime with an essential difference on the phase-dependent dynamics compared with the tunneling ionization regime.
The phase matching angles for second harmonic generation in KBBF have been determined from 194 to 170 nm. The wavelength of 160 nm generated by the 5th harmonic is the shortest ever obtained by nonlinear crystals.
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