title: High-power arrays of quantum cascade laser master-oscillator power-amplifiers.
abstract: We report on multi-wavelength arrays of master-oscillator power-amplifier quantum cascade lasers operating at wavelengths between 9.2 and 9.8 μm. All elements of the high-performance array feature longitudinal (spectral) as well as transverse single-mode emission at peak powers between 2.7 and 10 W at room temperature. The performance of two arrays that are based on different seed-section designs is thoroughly studied and compared. High output power and excellent beam quality render the arrays highly suitable for stand-off spectroscopy applications.
authors.affiliation: Harvard University, School of Engineering and Applied Sciences, 29 Oxford St., Cambridge, Massachusetts 02138, USA.
authors.forename: Patrick
authors.initials: P
authors.lastname: Rauter
authors.forename: Stefan
authors.initials: S
authors.lastname: Menzel
authors.forename: Anish K
authors.initials: AK
authors.lastname: Goyal
authors.forename: Christine A
authors.initials: CA
authors.lastname: Wang
authors.forename: Antonio
authors.initials: A
authors.lastname: Sanchez
authors.forename: George
authors.initials: G
authors.lastname: Turner
authors.forename: Federico
authors.initials: F
authors.lastname: Capasso
mesh_terms: D000669:Amplifiers, Electronic; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D009991:Oscillometry / Q000295:instrumentation*