TY - JOUR T1 - Quantum cascade ring lasers: Unidirectional operation and coupled ring tuning JO - 2011 Conference on Lasers and Electro Optics Europe and 12th European Quantum Electronics Conference CLEO Europe Eqec 2011 PY - 2011/09/06 AU - Nshii CC AU - Ironside CN AU - Sorel M AU - Slight TJ AU - Zhang SY AU - Revin DG AU - Cockburn JW ED - DO - DOI: 10.1109/CLEOE.2011.5942564 Y2 - 2025/12/07 ER -