Ultrafast frequency conversion sources for the visible and ultraviolet based on BiB<sub>3</sub>O<sub>6</sub>

M. Ebrahim-Zadeh

doi:10.1117/12.708569

Abstract

Efficient frequency conversion of high-repetition-rate femtosecond pulses and high-energy picosecond pulses with wide tunability throughout the visible and ultraviolet (UV) is described in BiB₃O₆. By implementing a femotsecond optical parametric oscillator (OPO) based on BiB₃O₆, the entire visible spectrum across 480-710 nm is accessed at practical average powers of up to 270 mW in pulses of 120 fs at 76 MHz repetition rate. Internal frequency doubling of the visible OPO signal pulses in &bgr;-BaB₂O₄ has also permitted femtosecond pulse generation with wide tunability across 250-350 nm in the UV, at up to 100 mW of average power. The potential of BiB₃O₆ for frequency conversion of high-intensity pulses is also demonstrated by third harmonic generation of amplified microjoule picosecond pulses at 1064 nm. Output pulse energies of 216 &mgr;J in 29 ps duration at 25 Hz repetition-rate have been obtained at 355 nm with overall conversion efficiencies of 50%. Optical parametric generation and amplification of high-intensity picosecond pulses in the visible and UV is also reported in BiB₃O₆, providing tuning across 370-740 nm, pulse energies of 48 &mgr;J pulse durations of 18 ps, and efficiencies as high as 30%.

Citation Download Citation

M. Ebrahim-Zadeh, M. Ebrahim-Zadeh, } "Ultrafast frequency conversion sources for the visible and ultraviolet based on BiB₃O₆", Proc. SPIE 6451, Solid State Lasers XVI: Technology and Devices, 645106 (19 February 2007); doi: 10.1117/12.708569; https://doi.org/10.1117/12.708569

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