Dynamic focus shaping with mixed-aperture coherent beam combining

Focus shaping of Bessel–Gauss beam with radial varying polarization

Focusing properties of Bessel–Gauss beam with radial varying polarization are investigated based on vector diffraction theory in this article. The polarization angle formed by polarization direction and radial coordinate is the function of the radial distance in pupil plane, and one polarization parameter indicates the speed of change of polarization angle. It was found that the intensity distr...

Coherent Beam Combining of Ultrashort Laser Pulses.pdf

Coherent beam combining with multilevel optical phase-locked loops

Wei Liang,* Naresh Satyan, Firooz Aflatouni, Amnon Yariv, Anthony Kewitsch, George Rakuljic, and Hossein Hashemi Department of Applied Physics and Department of Electrical Engineering, MC 128-95, California Institute of Technology, Pasadena, California 91125, USA Telaris Inc., 2118 Wilshire Boulevard, #238, Santa Monica, California 90403, USA Department of Electrical Engineering–Electrophysics,...

All-fiber coherent beam combining of fiber lasers.

One half of a 2x2 fused taper single-mode fiber coupler is used for the all-fiber spatial and spectral beam combining of two fiber lasers.

Coherent beam combining of two femtosecond fiber chirped-pulse amplifiers.

We demonstrate coherent beam combining of two femtosecond fiber chirped-pulse amplifiers seeded by a common oscillator. Using a feedback loop based on an electro-optic phase modulator, an average power of 7.2 W before compression is obtained with a combining efficiency of 90%. The spatial and temporal qualities of the oscillator are retained, with a recombined pulse width of 325 fs. This experi...