title: Single mode quantum cascade lasers with shallow-etched distributed Bragg reflector.
abstract: We report the fabrication of single mode quantum cascade lasers using a shallow-etched distributed Bragg reflector as frequency selective element. Quasi-continuous single mode tuning over 15 cm-1 at room temperature and 25 cm-1 via temperature tuning at Peltier temperatures is demonstrated. The behavior of both electro-optic and spectral characteristics under variation of the segment currents is analyzed, showing a maximum peak output power at room temperature of 600 mW. Thermal crosstalk between the laser segments is investigated. The spectral resolution of a gas absorption experiment is determined to be better than 0.0078 cm-1.
authors.affiliation: nanoplus GmbH, Oberer Kirschberg 4, 97218 Gerbrunn, Germany. Peter.Fuchs@nanoplus.com
authors.forename: Peter
authors.initials: P
authors.lastname: Fuchs
authors.forename: Jochen
authors.initials: J
authors.lastname: Friedl
authors.forename: Sven
authors.initials: S
authors.lastname: Höfling
authors.forename: Johannes
authors.initials: J
authors.lastname: Koeth
authors.forename: Alfred
authors.initials: A
authors.lastname: Forchel
authors.forename: Lukas
authors.initials: L
authors.lastname: Worschech
authors.forename: Martin
authors.initials: M
authors.lastname: Kamp