随着激光应用领域的快速拓展，超高峰值功率、超窄脉宽逐渐成为未来激光行业的重点研究方向之一，这种激光的超高电场能量给高精度的激光功率测量提出了挑战。传统的激光功率测量方法，如光电法、热释电法、量热法等逐渐显露出不适用于上述激光功率测量的缺点，此外上述方法都难以实现实时、在线测量。为了克服以上困难，需要一种新型激光功率测量原理与方法。以美国国家标准与技术研究院为代表的机构提出了一种光辐射压力测量法，该方法使激光作用在高反射率的反射镜上，激光动量形成了光辐射压力，这个力可以采用多种力学传感方式进行计量。该方法不但能实现激光功率快速、准确测量，而且不影响激光能量传输，可以实现实时、在线的激光功率测量。系统回顾了国内外通过光辐射压力测量激光功率的基本原理和系统组成，光辐射压力测量激光功率的研究现状，并对该方法的发展方向进行了展望。

With the rapid expansion of laser application fields, the laser with ultra-high peak power and ultra-narrow pulse width has gradually become one of the important research directions of the laser fields in the future. These laser with ultra-high electric field energy posed a challenge for high precision laser power measurement. And the traditional methods of laser power measurement, such as photoelectric method, pyroelectric method and calorimetry etc., have gradually revealed the disadvantages that they are not suitable for the abovementioned laser. Besides, these traditional methods are difficult to achieve real-time online measurement. In order to overcome these difficulties, a new method of laser power measurement is needed. Therefore, a method of light radiation pressure for laser power measurement is proposed by the organization represented by the National Institute of Standards and Technology. This method makes the laser incident on the mirror with high reflectivity, and the momentum of laser photon converts into light radiation pressure on the mirror, and the light radiation pressure can be measured by a variety of mechanical sensing modalities. It can not only achieve rapid and accurate measurement of laser power, but also have no influence on laser transmission. Besides real-time online laser power measurement is also possible. In this paper, the basic principle, the system, and the research status of laser power measurement using optical radiation pressure method at domestic and foreign were reviewed systematically. The future developments of this method were discussed in detail.