title: 3.36 µm single-mode quantum cascade laser with a dissipation below 250 mW.
abstract: We present 3.36 µm buried heterostructure distributed-feedback quantum cascade lasers with a power dissipation at threshold below 250 mW and operation temperatures as high as 130 °C. Threshold values below 20 mA at -10 °C in pulsed operation and 30 mA at -20 °C in continuous-wave operation are reported. Optical power above 130 mW and 13 mW are achieved at -20 °C in pulsed and continuous-wave operation, respectively. Continuous-wave operation occurs until 15 °C. We show single-mode emission in pulsed and continuous-wave operation. Single-mode performance is demonstrated in long pulse (5.56 µs) operation. The laser far-field exhibits a single lobe emission with full-width-half-max of 27 ° × 34 °.
authors.forename: Johanna M
authors.initials: JM
authors.lastname: Wolf
authors.forename: Sabine
authors.initials: S
authors.lastname: Riedi
authors.forename: Martin J
authors.initials: MJ
authors.lastname: Süess
authors.forename: Mattias
authors.initials: M
authors.lastname: Beck
authors.forename: Jérôme
authors.initials: J
authors.lastname: Faist