1. Raytheon Company, “Laser Solutions,” http://www.raytheon.com/capabilities/products/lasers/ (8 November 2014).
2. High extraction efficiency cylindrical ring resonator.;O'Keefe,1986
3. Common-pass decentered annular ring resonator with improved polarization control.;Holmes,1985
4. Solid State Lasers
5. Experimental results of a common pass decentered annular ring resonator,;Clayton,1990