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Second harmonic generation in coupled laser arrays is exploited to convert out-of-phase lasers into in-phase lasers and reveal hitherto unknown properties of some laser array geometries.
Efficient method for manipulating the spatial coherence of a laser is presented. Different mutual intensity coherence functions, such as cosine or Bessel functions, are obtained, and number of modes is controlled in 1D and 2D.
Experimental realization for phase-locking large arrays of lasers arranged in a variety of 2D geometries is presented. Using our degenerate-cavity coupling between lasers is easily controlled giving rise to a variety of intriguing phase structures.
We present a new method for phase locking several thousands of laser channels. This is achieved by incorporating all the laser channels into a common degenerate resonator that can support any transverse electric field distribution. The experimental arrangement is presented schematically in Fig. 1(A). The degenerate cavity is comprised of an Nd-Yag crystal gain medium that can support many laser channels,...
Phase locking of coupled fiber lasers requires that there exists at least one longitudinal-mode common to all lasers within their bandwidth. As the number of coupled lasers increases, the probability of finding such a longitudinal-mode drops exponentially [1]. Nevertheless, since the length and the corresponding longitudinal-modes of each fiber laser fluctuate randomly due to acoustic and thermal...
Thousands of coherent lasers are phased locked by global and local coupling in order to demonstrate first and second order phase transitions. The measured and calculated phase distribution reveals similar behavior to XY spin model.
A theoretical model characterizing the coherence and phase properties of two weakly coupled lasers is presented. Our calculations show how amplitude dynamics of non-phase locked lasers may enhance coherence by nearly an order of magnitude.
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