Important accomplishments concerning an integrated laser source based on stimulated Raman scattering (SRS) have been achieved in the last two decades in the fields of photonics, microphotonics and nanophotonics. In 2005, the first integrated silicon laser based upon SRS was realized in the nonlinear waveguide. This breakthrough promoted an intense research activity addressed to the realization of integrated Raman sources in photonics microstructures, like microcavities and photonics crystals. In 2012, a giant Raman gain in silicon nanocrystals was measured for the first time. Starting from this impressive result, some promising devices have recently been realized combining nanocrystals and microphotonics structures. Of course, the development of integrated Raman sources has been influenced by the trend of photonics towards the nano-world, which started from the nonlinear waveguide, going through microphotonics structures, and finally coming to nanophotonics. Therefore, in this review, the challenges, achievements and perspectives of an integrated laser source based on SRS in the last two decades are reviewed, side by side with the trend towards nanophotonics. The reported results point out promising perspectives for integrated micro- and/or nano-Raman lasers.

中文翻译：

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集成拉曼激光器：最近两个十年的回顾

在过去的二十年中，在光子学，微光子学和纳米光子学领域已经取得了有关基于受激拉曼散射（SRS）的集成激光源的重要成就。2005年，在非线性波导中实现了第一台基于SRS的集成硅激光器。这一突破促进了针对在光子微结构（如微腔和光子晶体）中实现集成拉曼源的研究工作。2012年，首次测量了硅纳米晶体的巨大拉曼增益。从这个令人印象深刻的结果开始，最近已经实现了一些将纳米晶体和微光子结构结合在一起的有前途的设备。当然，集成拉曼光源的发展受到光子学走向纳米世界的趋势的影响，从非线性波导开始，经过微光子结构，最后进入纳米光子。因此，在这篇综述中，回顾了近二十年来基于SRS的集成激光源的挑战，成就和观点，以及纳米光子学的发展趋势。报告的结果指出了集成微和/或纳米拉曼激光器的前景广阔的前景。