Metamaterial Structures for Q-Switching in Lasers

Patent Status: 

Patent Granted

Indian Patent Applicaton No: 

3706/DEL/2012

US Patent No: 

US-14/131,899

US Patent No Date: 

17.04.2013

PCT filing No: 

PCT/IB2013/053032

International Patent No. Date: 

17.04.2013

Date Filed: 

03.12.2012

Date Granted: 

02.10.2014

Department: 

Patent Category: 

Overview: 

Design for a novel mirror for the lasing cavity of a C02 laser that permits the rapid Q-switching of the cavity.

Key Features: 

  • This metamaterial saturable absorber mirror is made up of a composite structured metallic (gold) metamaterial that acts as a near-perfect absorber.
  • The design results in a robust Q-switching mirror that has broadband activity over a large bandwidth of C02 laser emission, is switchable in short time scales of few nanoseconds, and is based on robust inorganic materials.
  • C02 lasers operating at 9-11 microns using a composite metamaterial design

Applications: 

  • Pulsed C02 lasers micromachining purposes
  • Laser Applications operating at other infrared frequencies by standard and suitable changes in the metamaterial design

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