Pulsed Chemical Oxygen Iodine Lasers Excited by Pulse Gas Discharge with the Assistance of Surface Sliding Discharge Pre-ionization

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2012,（5）
• 页码范围: 140-143
• 页数: 4页
• 语种: 英文
• DOI: 10.1088/0256-307X/29/5/054212

摘要

Continuous-wave chemical oxygen-iodine lasers (COILs) can be operated in a pulsed operation mode to obtain a higher peak power.The key point is to obtain a uniform and stable glow discharge in the mixture of singlet delta oxygen and iodide.We propose using an electrode system with the assistance of surface sliding pre-ionization to solve the problem of the stable glow discharge with a large aperture.The pre-ionization unit is symmetrically fixed on the plane of the cathode surface.A uniform and stable glow discharge is obtained in a mixture of iodide (such as CH3I) and nitrogen at the specific deposition energy of 4.5 J/L,pressure of 1.99-3.32 kPa,aperture size of 11 cm × 10cm.The electrode system is applied in a pulsed COIL.Laser energy up to 4.4J is obtained and the specific energy output is 2 J/L.