Journal ArticleDOI
Parametric amplification and oscillation with walkoff-compensating crystals
TLDR
In this paper, the authors measured and modeled parametric gain and oscillation for two-crystal ring oscillators arranged for walkoff compensation, and showed how the orientation of the crystals determined the relative sign of the nonlinear mixing coefficient in the two crystals.Abstract:
We measure and model parametric gain and oscillation for two crystals arranged for walkoff compensation. We show how the orientation of the crystals determines the relative sign of the nonlinear mixing coefficient in the two crystals. This sign dramatically influences small signal gain and oscillator performance, and we show how to determine the correct crystal orientation from parametric-gain measurements. The performance of two-crystal oscillators is examined with particular attention to beam tilts, conversion efficiency, and beam quality. We find reduced efficiency and increased oscillation threshold when the coefficients have opposite signs in a two-crystal ring oscillator. Sign reversal seems to have little influence on spectral purity or far-field beam profiles when the oscillator is seeded.read more
Citations
More filters
Journal ArticleDOI
High speed laser drilling of metals using a high repetition rate, high average power ultrafast fiber CPA system.
TL;DR: The experimental data are in good qualitative agreement with simulations of the heat accumulation effect and previous studies on the particle emission, and for materials with a high thermal conductivity as copper, both effects are negligible for the investigated processing parameters.
Journal ArticleDOI
Enhanced cooperative quantum cutting in Tm3+- Yb3+ codoped glass ceramics containing LaF3 nanocrystals.
TL;DR: The photoluminescence properties of these glass ceramics were measured and the thermal treatment duration dependent quantum efficiency was investigated, and it was found that the quantum efficiency is 13% increased for the 0.5Tm3+-8Yb3+ doped glass ceramic with a maximum value of 162%, respectively.
Journal ArticleDOI
K-space linear Fourier domain mode locked laser and applications for optical coherence tomography.
TL;DR: A Fourier Domain Mode Locked (FDML) wavelength swept laser source with a highly linear time-frequency sweep characteristic is reported on and OCT imaging without k-space resampling prior to Fourier transformation is demonstrated.
Journal ArticleDOI
Midinfrared laser source with high power and beam quality
TL;DR: A simple scheme for generation of high power in the midinfrared is demonstrated by using a 15 W thulium-doped fiber laser emitting at 1907 nm to pump a Q-switched Ho:YAG laser with excellent beam quality.
Journal ArticleDOI
High-conversion-efficiency optical parametric chirped-pulse amplification system using spatiotemporally shaped pump pulses.
TL;DR: To the authors' knowledge this is the highest conversion efficiency and stability achieved in an optical parametric chirped-pulse amplification system.
References
More filters
Book
The Principles of Nonlinear Optics
TL;DR: In this article, the authors present a general description of wave propagation in nonlinear media, including high-resolution nonlinear optical spectroscopy, and four-wave mixing and mixing.
Book
Handbook of nonlinear optical crystals
TL;DR: In this article, the authors provide a complete description of the properties and applications of all non-linear crystals reported in the literature up to the beginning of 1990, including the most important equations for calculating parameters of nonlinear frequency converters.
Journal ArticleDOI
High-efficiency and narrow-linewidth operation of a two-crystal β-BaB2O4 optical parametric oscillator
TL;DR: In this paper, a two-crystal, walkoff-compensated optical parametric oscillator design using β-BaB2O4 was presented, which significantly improved the performance of the device.