>30 MW Peak Power Distributed Face Cooling (DFC) Handheld Laser

摘要

Recent progress of Giant Micro-Photonics toward ubiquitous power laser provides giant power with fruitfulapplications in the fields of laser ignition, Master Oscillator Power Amplifier, and laser material processsuch as laser peening, new material creation under intense shock wave. The development of high-powerand high field solid-state laser is limited by heat from gain media during laser operation. End-pumpedDistributed Face Cooling (DFC) laser with monolithic multi-disks structure combines both the advantagesof conventional rod laser and thin-disk laser such as high gain cross section and compact heat-distractionstructure. A new architecture of DFC gain media is proposed here through fabricating monolithicmulti-disks by Surface Activated Bonding (SAB) technology. Four sets of uncoated Nd~(3+):YAG singlecrystal with gain aperture of 8mm×8mm and thickness of 1mm was used. Five sets of transparent sapphiresingle crystal with aperture of 10mm×10mm and thickness of 1 mm was used as heat sink media.