We propose a continuous-wave (CW) middle infrared (MIR) and long infrared (LIR) dual-band laser for the calibration and effect research of infrared detecting and imaging systems. A total output power of 18 W is achieved by the proposed dual-band laser through one DF gain medium module and one parallel placed CO<sub>2</sub> gain medium module using a common stable resonator and output mirror with nominal transmissivities of ~5% in the MIR band and ~10% in the LIR band. Spectra of dual-band laser are acquired. The power extracting efficiency of this dual-band laser can be significantly improved, as validated by a single-band test of optimized parameters.
© 2012 Chinese Optics Letters
(110.3080) Imaging systems : Infrared imaging
(140.1550) Lasers and laser optics : Chemical lasers
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3470) Lasers and laser optics : Lasers, carbon dioxide
Lasers and Laser Optics
Shengfu Yuan, Wei Luo, Baozhu Yan, and Qianjin Zou, "Research on a middle infrared and long infrared dual-band laser," Chin. Opt. Lett. 10, 031404- (2012)