Phase matching for parametric generation in polarization maintaining photonic crystal fiber pumped by tunable Yb-doped fiber laser

Abstract

Phase matching curves for parametric generation in four wave mixing (FWM) processes of different types are studied experimentally and numerically for a polarization maintaining photonic crystal fiber pumped by a tunable continuous wave ytterbium doped fiber laser near 1 μm. Parametric frequency shifts of up to 100 THz for scalar and pump-divided vector FWM processes are observed providing generation of an idler wave with wavelengths as short as 765 and 758 nm for the two processes, respectively. Explicit analytical solutions for the scalar and polarization phase matching in the vicinity of zero dispersion wavelength have been also deduced. They are based on the phase-mismatch Taylor series expansion taking into account the polarization contribution. A good quantitative agreement between the experimental and calculated frequency shifts is demonstrated.

Cascade simulations of unidirectional fiber optical parametric oscillators

“…The fiber is quoted to have γ = 10 −2 W/m, a zero dispersion wavelength situated at λ d = 1051.85 nm and the Taylor expansion coefficients at that wavelength are listed in [5].…”

High-power widely tunable ps source in the visible light based on four wave mixing in optimized photonic crystal fibers

“…Consequently, a significant tunability in the visible [9,12] can be obtained by the transfer of the broad amplification bandwidth of Yb-fiber lasers in LMA fibers with mode field diameter (MFD) of typically 5 to 15 µm (0.05 ≤ NA ≤ 0.3). Moreover, due to energy conservation, FWM from such Yb sources provides additional longer wavelengths also tunable however ranging in the middle infrared [9,[12][13][14][15][16]. Since the MFD varies weakly with the wavelength (typ.…”

Stability of a Fiber Optical Parametric Oscillator With and Without a Seed Signal

“…An offset δ is allowed for in WDM1, and a further cumulated round trip loss is applied at position 1. The fiber considered is an 18 m LMA-PM-5 photonic crystal fiber by NKT Photonics [2]. In the numerical implementation, the WDMs are modeled using the scattering matrix representation [3] and light propagation in the fiber is simulated by solving the generalized nonlinear Schrödinger equation using the split step Fourier method [4].…”