Hawking radiation was originally proposed in astrophysics, but it has been generalized and extended to other physical systems receiving the name of analogue Hawking radiation. In the last two decades, several attempts have been made to measure it in a laboratory, and one of the most successful systems is in optics. Light interacting in a dielectric material causes an analogue Hawking effect, in fact, its stimulated version has already been detected and the search for the spontaneous signal is currently ongoing. We briefly review the general derivation of Hawking radiation, then we focus on the optical analogue and present some novel numerical results. Finally, we call for a generalization of the term Hawking radiation. This article is part of a discussion meeting issue ‘The next generation of analogue gravity experiments’.

中文翻译：

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光学及其他领域的霍金辐射

霍金辐射最初是在天体物理学中提出的，但它已被推广并扩展到其他物理系统，并被称为模拟霍金辐射。在过去的二十年中，人们多次尝试在实验室中测量它，其中最成功的系统之一是光学系统。光在介电材料中相互作用会产生类似的霍金效应，事实上，它的受激版本已经被检测到，并且目前正在进行自发信号的搜索。我们简要回顾了霍金辐射的一般推导，然后重点关注光学模拟并提出了一些新颖的数值结果。最后，我们呼吁对霍金辐射一词进行概括。本文是“下一代模拟重力实验”讨论会议问题的一部分。