Coherent beam combining with micro-lens arrays

Coherent Beam Combining of Ultrashort Laser Pulses.pdf

Beam combining of quantum cascade laser arrays.

Wavelength beam combining was used to co-propagate beams from 28 elements in an array of distributed-feedback quantum cascade lasers (DFB-QCLs). The beam-quality product of the array, defined as the product of near-field spot size and far-field divergence for the entire array, was improved by a factor of 21 by using wavelength beam combining. To demonstrate the applicability of wavelength beam ...

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,...

Laser beam quality measurement by micro lens array method

In the traditional laser beam quality measurement, the lens transform method is used to obtain the information of the multi spot, and can only evaluate the beam quality of a continuous or high repetition rate laser, the evaluation speed is slow and the real-time performance is poor. A micro lens array method is proposed, which samples the laser spot only once and obtains all the spot informatio...

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.