Engineered quasi-phase-matching for laser techniques [Invited]

Abstract

The quasi-phase-matching (QPM) technique has drawn increasing attention due to its promising applications in areas such as nonlinear frequency conversion for generating new laser light sources. In this paper, we will briefly review the main achievements in this field. We give a brief introduction of the invention of QPM theory, followed by the QPM-material fabrication techniques. When combing QPM with the solid-state laser techniques, various laser light sources, such as single-wavelength visible lasers and ultraviolet lasers, red-green-blue three-fundamentalcolor lasers, optical parametric oscillators in different temporal scales, and passive mode-locking lasers based on cascaded second-order nonlinearity, have been presented. The QPM technique has been extended to quantum optics recently, and prospects for the studies are bright.

Band-gap modulation of two-dimensional saturable absorbers for solid-state lasers

“…Although the commercial semiconductor saturable absorber mirrors (SESAMs) could be fabricated for the specific wavelength from 0.4 to 2.5 μm by using different semiconductor material systems [2,10], the relatively complex structural design may increase the product cost and the difficulty of preparation. In addition, the quasi-phase-matching technique in optical superlattice, which is feasible for a wide wavelength range as long as it is in the transparent spectral region of the optical superlattice material, is also a promising method to obtain passive mode-locking lasers [11][12][13].…”

Heteroepitaxy, an Amazing Contribution of Crystal Growth to the World of Optics and Electronics

“…Finally, while this work is focused mostly on the material aspects of quasi-phase-matching, the readers who are interested in the device aspects of this research are kindly referred to the excellent, comprehensive review on this matter by Hu et al [54].…”

Quasi-phase-matched χ(3) -parametric interactions in sinusoidally tapered waveguides

“…Using periodically-poled ferroelectric crystals, where the nonlinear coefficient can be flipped every half this period, this method has been experimentally demonstrated nearly after two decades from its proposal due to the lack of the suitable fabrication facilities at that time [4]. QPM structures have remarkably boosted the classical and quantum optical nonlinear-frequency-conversion applications in bulk and integrated structures [5,6]. This technique enables, for instance: (i) Collinear interactions between co-polarised waves, results in exploiting the strongest component of the second-order nonlinear tensor.…”