Ultrabroadband operation of a femtosecond optical parametric generator based on BiB_3O_6 in the near-IR

Abstract

Ultrabroadband optical parametric generation in the near-IR (approximately 135 THz, 1.15-2.4 microm) is demonstrated using bismuth triborate, BiB(3)O(6) (BIBO), in a collinear geometry. The white light continuum energy obtained with a single stage reached 15 microJ (internal conversion efficiency of approximately 7%). Integral pulse durations as short as 63 fs were derived from the recorded FROG traces, comparable to the 45 fs pulse duration of the 1 kHz Ti:sapphire regenerative amplifier used for pumping at 800 nm.

Carrier-Envelope-Phase-Preserving, Octave-Spanning Optical Parametric Amplification in the Infrared Based on BiB3O6Pumped by 800 nm Femtosecond Laser Pulses

“…In order to meet the conditions discussed above, we selected BIBO as an OPA crystal because BIBO has its zero GDD wavelength at 1580 nm for an ordinary wave polarized along the y-axis, 21,22) which is advantageous for 790 nm pump pulses produced from Ti:sapphire lasers. We simulate an OPA gain (red dashed line in Fig.…”

Generation of sub-two-cycle millijoule infrared pulses in an optical parametric chirped-pulse amplifier and their application to soft x-ray absorption spectroscopy with high-flux high harmonics

“…In this study, we choose a degenerate OPA combined with the unique characteristics of bismuth triborate (BiB 3 O 6 , BIBO) crystal when it is pumped by a Ti:sapphire chirpedpulse-amplification (CPA) laser. The advantages of this combination are described elsewhere [36][37][38][39]. Briefly, in this configuration, the central wavelength of the signal wave (1.6 μm) is set to ∼1.58 μm, where the group delay dispersion of BIBO crystal becomes zero.…”

Generation of ultrashort intense optical pulses at 1.6 μm from a bismuth triborate-based optical parametric chirped pulse amplifier with carrier-envelope phase stabilization

“…where Δω and Δk 0 denote an offset from the central angular frequency of the signal wave and the phase mismatch at the central angular frequency, which can be eliminated by angle tuning. Among many types of OPA such as noncollinearlyphase-matched OPAs [7] and frequency domain OPAs [24], in the IR spectral region, it has been found that a unique solution to achieve broadband parametric amplification exists in a degenerate OPA when the central wavelength of the signal wave is equal to the zero group delay dispersion (GDD) wavelength of nonlinear crystals [25][26][27]. In a degenerate OPA, all the odd terms in equation ( 1) vanish because the central angular frequencies of the signal and idler are identical.…”