A5016743475- Laser-Matter Interactions and Applications
- Advanced Fiber Laser Technologies
- Solid State Laser Technologies
- Nonlinear Photonic Systems
- Nonlinear Optical Materials Studies
- Semiconductor Lasers and Optical Devices
- Photonic and Optical Devices
- Laser-induced spectroscopy and plasma
- Laser Material Processing Techniques
University of Ottawa
2017-2021
Seeding a laser amplifier Amplification of femtosecond pulses requires lasing medium or nonlinear crystal. The chemical properties the adherence to momentum conservation rules in crystal constrain frequency and bandwidth amplified pulses. Vampa et al. seeded modulation instability pumped with near-infrared This provided method for high gain amplification broadband short up intensities 1 terawatt per square centimeter. avoids constraints related doping phase matching can be expected applied...
Whereas the Kerr nonlinearity is well understood in perturbative limit of nonlinear optics, there considerable discussion about its functional form and magnitude at extreme intensities, which point matter starts to ionize. Here, we introduce a concept answer this question theoretically analyze feasibility. We demonstrate that seeded instability amplification provides clear signatures from can be extracted non-perturbative optics.
Evolution of lasers in Kerr nonlinear materials is inextricably linked with unstable behavior.Current research has investigated the growth optical instability out noise, which results phenomena such as conical emission and filamentation bulk materials, modulation fibers.Here, we suggest that seeding dielectrics can be used for wideband amplification ranging from second harmonic pump laser to mid-infrared.Our theoretical feasibility analysis focuses on infrared.We find one-to two-cycle pulse...
A new amplification method based on the optical Kerr instability is suggested and theoretically analyzed, with emphasis near to mid-infrared wavelength regime. Our analysis for CaF2 KBr crystals shows that one two cycle pulse by 3-4 orders of magnitude in range from 1-14 microns feasible currently available laser sources. At 14 final output energies 0.05 mJ are achievable corresponding about 0.2-0.25% pump energy. The presents a promising process ultrashort pulses.
Recently it was shown that Kerr instability via degenerate four-wave mixing can amplify single-cycle Gaussian seed pulses from the visible to deep infrared [Optica5, 271 (2018OPTIC82334-253610.1364/OPTICA.5.000271)]. Pump-to-seed energy conversion efficiency found be around 0.15–0.2%, which is lower than of conventional second-order nonlinear optical parametric amplifiers (OPAs). Here we show replacing with a Bessel–Gaussian yield efficiencies 1%, comparable OPAs. This increase in result...