External cavity spectral beam combining of 4.6 µm emitting quantum cascade laser arrays
2010 Edition, September 1, 2010 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Spectral beam combining of linear arrays of quantum cascade (QC) lasers emitting at 4.6 µm is demonstrated as a viable approach towards power-upscaling. By using an external cavity setup equipped with a...

4.7 µm-Emitting Near-Resonant Leaky-Wave-Coupled Quantum Cascade Laser Phase-Locked Arrays
2017 Edition, Volume 23, November 1, 2017 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Five-element phase-locked arrays of 4.7 μm-emitting quantum cascade lasers are demonstrated which operate either in a near-diffraction-limited (D.L.) beam to 3.6 W peak pulsed power or in a narrow beam (<; 3.5 × D.L.) up to 6.1 W peak pulsed...

4.7 µm-emitting leaky-wave-coupled quantum cascade laser phase-locked array
2016 Edition, September 1, 2016 - Institute of Electronics, Information and Communication Engineers, The (IEIC)

Phase-locking, via leaky-wave coupling, of five 4.7 μm-emitting quantum cascade lasers is demonstrated for coherent-power scaling. Non-resonant devices fabricated by two-step MOCVD operate in a mixture of in-phase and out-of-phase modes to 3.85 W...

Spectral Bandwidth Narrowing of High Brightness Spectral Beam Combining Diode Laser
2017 Edition, Volume 9, April 1, 2017 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

We introduce a 5x demagnifying telescope system into an external cavity spectral beam combining and realize a narrow spectrum diode laser combining output by using a nine-emitter 970 nm diode laser mini-bar. With an external...

High brightness external cavity broad area diode laser bar using off-axis spectral beam combining
2009 Edition, June 1, 2009 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Off-axis spectral beam combining [1] has been applied to a broad area diode laser bar with a central wavelength 965 nm and a front facet anti reflection coating with residual reflectivity ≪ 0.01%. A combined output power of 9 W has been achieved from 12...

Coupled Ridge Waveguide Substrate-Emitting DFB Quantum Cascade Laser Arrays
2017 Edition, Volume 29, January 15, 2017 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

A coupled ridge waveguide substrate-emitting quantum cascade laser array operating at λ ~ 7 μm was presented. Fifteen elements were integrated in parallel to get high peak power and improved beam quality. The device was operating at fundamental supermode...

Surface emitting, single-mode quantum cascade laser array
2015 Edition, May 1, 2015 - Optical Society (The) (OSA)

We present the first realization of a single-mode surface-emitting quantum cascade laser array. The ten lasers operate over a bandwidth of 175 cm-1 between wavelengths of 8 and 10 μm and show similar pumping characteristics. The device...

Multi-Wavelength Operation of a Single Broad Area Diode Laser by Spectral Beam Combining
2014 Edition, Volume 26, February 1, 2014 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Stabilized multi-wavelength emission from a single emitter broad area diode laser (BAL) is realized by utilizing an external cavity with a spectral beam combining architecture. Self-organized emitters that are equidistantly spaced across the...

Dense wavelength beam combining of an external thin-film filter multi-laser cavity stabilized diode laser module
2016 Edition, June 1, 2016 - Optical Society (The) (OSA)

We report on kW-class dense wavelength beam combining of a diode laser module which is spectrally stabilized using a novel external multi-laser cavity architecture based on a thin-film filter as a dispersive optical element.

Spectral beam combining of a broad-stripe diode laser array in an external cavity
2000 Edition, January 1, 2000 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Summary form only given. Beam combining of the outputs from many laser gain elements, while maintaining the beam quality of a single element, is an attractive approach for scaling the power and brightness of laser systems. Most...