大通激光与引力波探测

    美国大通激光Access Laser有幸自2003年起与LIGO团队进行项目合作，至今已有几个不同型号的多台稳定型激光器应用在LIGO以及欧洲引力波观测站（EGO）。大通激光致力于不断改进和完善激光器的设计，用高精尖的激光技术来满足引力波探测项目不断提升的高稳定、低噪音以及极高灵敏的操作需求。大通激光为LIGO团队取得的历史性突破感到由衷的高兴，并为能够有幸为探测引力波做出相应的贡献感到非常自豪。

       “…稳定型CO2激光器作为超稳定热源来加热LIGO主反射镜，可以抵消LIGO主激光器对主反射镜带来的热形变效应”

       “…我们选用大通激光研发制造的MeritS型射频激励CO2激光器，因为该激光器可长期稳定在一条谱线输出，避免跳线的发生”

 

*左图：在噪声之上清晰的信号提示一个明确的事件（探测到引力波）

*右图：稳定型CO2激光器可以抵消反射镜受热变形的副作用，使LIGO保持低噪以及精度可达10 ^-19米的探测效果。

    更多有关LIGO历史性观测到引力波的内容请参见：https://www.ligo.caltech.edu/news/ligo20160211

        内容参考：https://dcc.ligo.org/T050064/public

·                      https://www.ligo.caltech.edu

 

Access Laser at LIGO

        Access Laser has been collaborating with LIGO for more than 10 years.  Several models of our stabilized lasers have been used by LIGO in the US and EGO in Europe.  Special design efforts have been made along the way to meet the ever-increasing demand for high-stability,  low-noise, and extremely sensitivity operation of the LIGO.  We are grateful for the opportunity to contribute to the detection of gravitational waves, and we are proud of the LIGO team! 

       "..... an auxiliary system uses a CO₂ laser to heat the mirrors in a manner precise enough to counteract the shape-changes that occur as a result of heating from LIGO’s main laser."

       ".... The laser that is used is an RF excited Merit-S Model CO2 laser manufactured by Access Laser Company. The laser was chosen because of its proven ability to not line hop over extended periods...."

Acknowledgement

·         https://dcc.ligo.org/T050064/public

·         https://www.ligo.caltech.edu