High Power Laser Systemfor Advanced Virgo.pptVIP

CNM Frascati 12/01/06 High Power Laser System for Advanced Virgo Design goals Present technology : laser designs Other activites in the world Virgo + : First Step in the Studies Laser System for Virgo + Fiber Master Laser for Virgo + Virgo + : Nd:YVO4 50WAmplifier (LZH) Possible Planning for Virgo + Laser System Adv. Virgo: HP single-mode fiber lasers HP related photonics Requirements for mode cleaning PCF as Input Mode Cleaner High Index Guiding Fiber Low Index Guiding Fiber: Photonic bandgap fiber Fabrication of PCF PCF RD financed by EGO Results on hollow-core HC-1060-02 Experimental results (2005) Extra Noise measurement Available fiber components (for power 1W) All-fibered Laser System Conclusion: Proposed main steps * * C.N.Man Design goals Present technology Other activities in the world Virgo+ and Laser System - possible planning Advanced Virgo HP laser HP related photonics (fibers as MC, modulators,…) All-fibered laser system Conclusion Laser power: 200W Wavelength : 1 mm to 1.6 mm, linked to SiO2 or Si, laser material, optical technology,… Input Beam propagation: free space, fibre ? Beam cleaning: resonant MC or fibre MC? Modulation: Bulk, or fibre components ? Which frequency(ies) ? High power ? cooling problem (birefringence induced by thermal loading, …) ? large surface/volume ratio and material conductivity ? high efficiency Solutions : new crystals, or ceramics disk amplifiers or fibres Today, kW single mode lasers are available with both disks and fibre amplifiers Laser systems ( kW) GW groups activities: mainly Germany and Australia Scientific and telecom lasers ( 100 W) Disks and fibre lasers, many European small companies  Yb and Er doped Fiber lasers: 1,06 and 1,3 ?m Nb: telecom lasers ? MTBF 100 000 h ? Fibre integrated isolators, modulators, etc ? 1.3- 1.5 mm wavelength Very high power lasers ( up to MW CW) Disk lasers for military and industry : Boeing, … Fibr