Access Laser at LIGO

Access Laser at LIGO

Gravitational Waves Detected for a Second Time


  • June 16, 2016

LIGO detects gravitational waves for a second time, the result of two black holes colliding 1.4 billion light years away to form a single black hole 21 times the mass of the sun.

For the full article from Laser Focus World:


  • February 16, 2016

Access Laser has been collaborating with the Laser Interferometer Gravitational-Wave Observatory (LIGO) for more than 10 years.  Several models of our stabilized lasers have been used by LIGO in the US and the European Gravitational Observatory.  Special design efforts have been made along the way to meet the ever-increasing demand to achieve high-stability, low-noise, and extremely sensitive 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….”

For more information about LIGO and the history making discovery visit: