Read e-book online Coherent Laser Beam Combining PDF

By Arnaud Brignon

ISBN-10: 352741150X

ISBN-13: 9783527411504

Laser beam combining options enable expanding the ability of lasers a ways past what it's attainable to acquire from a unmarried traditional laser.One step additional, coherent beam combining (CBC) additionally is helping to keep up the very specified houses of the laser emission with admire to its spectral and spatial homes. Such lasers are of significant curiosity for lots of purposes, together with business, environmental, safety, and
scientific functions. lately, major development has beenmade in coherent beam combining lasers, with a complete output strength of a hundred kW already accomplished. Scaling
analysis exhibits that additional elevate of output energy with first-class beam caliber is possible through the use of present cutting-edge lasers. therefore, the data of coherent beam combining strategies becomes the most important for the layout of next-generation highpower lasers. the aim of this publication is to offer the more moderen innovations of coherent beam combining through global chief groups within the field.

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9 Optical configurations for filled aperture beam combining. 4 Geometric Beam Combining combine more than two beams; hence, these approaches tend to be lossy due to both direct transmission losses through each stage of combiner and the CBC losses from accumulated wavefront errors imposed by the upstream combiner elements. 9, it is apparent that diffractive elements are uniquely well suited toward the demands of high-power, high channel count CBC. By virtue of their multiport and free space nature, both combining efficiency and power handling favorably compare to other filled aperture approaches, all of which involve multiple optical components and/or guided wave interactions.

9 Optical configurations for filled aperture beam combining. 4 Geometric Beam Combining combine more than two beams; hence, these approaches tend to be lossy due to both direct transmission losses through each stage of combiner and the CBC losses from accumulated wavefront errors imposed by the upstream combiner elements. 9, it is apparent that diffractive elements are uniquely well suited toward the demands of high-power, high channel count CBC. By virtue of their multiport and free space nature, both combining efficiency and power handling favorably compare to other filled aperture approaches, all of which involve multiple optical components and/or guided wave interactions.

The zigzag axis is vertical and the nonzigzag axis is horizontal. 16 Schematic of 15 kW zigzag slab amplifier chain with adaptive optic wavefront correction. The far-field intensity distribution is shown at full power. beam is injected into the slab at angles that are 20–30 from the normal to the input face to ensure that TIR occurs at the YAG–SiO2 interface. 16 [54,55]. The beam was image relayed from slab to slab to minimize geometric coupling losses. Double-passing each slab via angular multiplexing enabled good saturation and 30% optical extraction efficiency.

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Coherent Laser Beam Combining by Arnaud Brignon


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