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We report on fabrication of high-Q (i.e., a quarter million) lithium niobate whispering-gallery-mode microresonators using femtosecond laser micromachining. Second harmonic generation with a normalized conversion efficiency of 1.35×10−5/mW has been experimentally demonstrated.
We spectrally broaden 1-ps pulses from a 14.3-W, 10.6-MHz thin-disk laser in a 30.5-cm long Xe-filled HC-PCF. After compression, we achieve 9.1-W in 470-fs pulses (63% overall efficiency). No depolarization or damage is observed.
We present a Fourier domain mode locked (FDML) laser scanning from 1540 to 1570 using two-pump optical parametric amplifier (OPA) as the gain medium. The sweep rate of 39.683 kHz is achieved.
We have examined a femtosecond pulse shaping phenomenon induced by self-organized Ag nanoparticle arrays. Significant pulse shortening was observed as plasmon resonance occurs between the array and femtosecond pulses.
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