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New Light Sources Working Group David McClelland The Australian National University

New Light Sources Working Group David McClelland The Australian National University. G0900199-v1. Increasing Laser power decreases shot noise; (increases radiation pressure noise) Advanced detectors reaching limits of power handling kW class lasers need corresponding developments in optics

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New Light Sources Working Group David McClelland The Australian National University

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  1. New Light Sources Working Group David McClelland The Australian National University LIGO Scientific Collaboration G0900199-v1

  2. Increasing Laser power decreases shot noise; (increases radiation pressure noise) • Advanced detectors reaching limits of power handling • kW class lasers need corresponding developments in optics • WG should continue to pursue kW class • different colour lasers LIGO Scientific Collaboration

  3. Shot noise and radiation pressure noise can also be manipulated using quantum optical techniques • Can be done internal to the IFO - the realm of the AIC? • OR can modify quantum noise injected into the IFO - quantum optical light sources • PROPOSAL: add sub-quantum (squeezed) light source research to the portfolio of the lasers WG • Includes nonlinear optical material LIGO Scientific Collaboration

  4. New name: Light Sources WG? Quantum Noise WG • Interim Chair: David McClelland • Will attempt to find telecon times which, at least initially, allow all parts of the globe to participate • Eg. 11:30pm Canberra; 10:30am Japan; 6:30am; LA; 12:30 pm Germany • Encourage anyone interested in either laser development or quantum noise manipulation (either internal or external to the IFO) to sign up! • If you are not already on the lasers WG list, please send me an email (david.mcclelland@ligo.org) to join the ‘new’ WG LIGO Scientific Collaboration

  5. Most importantly…. • This meeting is Benno Willke’s final meeting as Lasers WG Chair. • Benno has been an extremely effective and professional Chair. On behalf of the LSC I would like to congratulate Benno on the fantastic job he did. I look forward to his continuing involvement and counsel in the new WG. • Thank you Benno! LIGO Scientific Collaboration

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