With rapid development of high quality and sophisticated equipment

the demand of high quality

high depth/radius radio micro-holes is more and more urgent. Femtosecond laser and water-jet guided laser drilling technologies are introduced. Firstly

the principles of two kinds of micro-holes machining technologies are discussed and two kinds of micro-holes drilling technology research status are reviewed; Then

the effects of processing mode

laser process parameters

processing environment (vacuum

gas

liquid

chemical environment) and laser beam coupling with water on the micro-hole drilling quality are discussed; Finally

aerospace application of two kinds of micro-hole machining technologies and current problems which we face are summed up.