Master-oscillator power-amplifier quantum cascade laser array

作者：Rauter P^*; Menzel S; Goyal A K; Goekden B; Wang C A; Sanchez A; Turner G W; Capasso F

来源：Applied Physics Letters, 2012, 101(26): 261117.

DOI：10.1063/1.4773377

We report on the demonstration of an array of master-oscillator power-amplifier quantum cascade lasers (QCLs) operating in single-mode at different wavelengths between 9.2 and 9.8 mu m. In each device, the output of a distributed feedback QCL is injected into a tapered QCL section which acts as an amplifier while maintaining a high beam quality due to adiabatic mode spreading. All array elements feature longitudinal as well as transverse single-mode emission at peak powers between 0.8 and 3.9W at room temperature. The high output power and excellent beam quality render the array highly suitable for stand-off spectroscopy applications.

• 出版日期2012-12-24