公开(公告)号：EP3053227A4

公开(公告)日：2017-05-24

申请号：EP14849105

申请日：2014-09-16

申请人： IPG PHOTONICS CORP

发明人： VASILYEV SERGEY ,  MIROV MICHAEL ,  GAPONTSEV VALENTIN

IPC分类号： H01S3/098 ,  H01S3/081 ,  H01S3/094 ,  H01S3/109 ,  H01S3/11 ,  H01S3/16

CPC分类号： H01S3/094026 ,  H01S3/0014 ,  H01S3/0612 ,  H01S3/08004 ,  H01S3/0815 ,  H01S3/0816 ,  H01S3/1095 ,  H01S3/1112 ,  H01S3/1305 ,  H01S3/162 ,  H01S3/1623 ,  H01S3/1628

公开(公告)号：EP3127198A4

公开(公告)日：2017-12-06

申请号：EP15773479

申请日：2015-03-30

申请人： IPG PHOTONICS CORP

发明人： VASILYEV SERGEY ,  MIROV MICHAEL ,  MOSKALEV IGOR

IPC分类号： H01S3/098 ,  H01S3/08 ,  H01S3/109 ,  H01S3/16

CPC分类号： H01S3/1112 ,  H01S3/0092 ,  H01S3/08072 ,  H01S3/0811 ,  H01S3/0816 ,  H01S3/094042 ,  H01S3/1062 ,  H01S3/1095 ,  H01S3/1616 ,  H01S3/1623 ,  H01S3/1628 ,  H01S3/1685

摘要： A Kerr Mode Locked ("KLM") laser is configured with a resonant cavity. The gain medium, selected from polycrystalline transition metal doped II-VI materials ("TM:II-VI), is cut at a normal angle of incidence and mounted in the resonant cavity so as to induce the KLM laser to emit a pulsed laser beam at a fundamental wavelength. The pulses of the emitted laser beam at the fundamental wavelength each vary within a 1.8 - 8 micron ("μm") wavelength range, have a pulse duration equal to or longer than 30 - 35 femtosecond ("fs") time range and an average output power within a mW to about 20 watts ("W") power range. The disclosed resonant cavity is configured with a plurality of spaced apart reflectors, two of which flank and are spaced from the gain medium which is pumped to output a laser beam at a fundamental wavelength and its higher harmonic wavelengths. The gain medium is mounted on a translation mechanism operative to controllably displace the gain medium along a waist of the laser beam. The displacement of the gain medium causes redistribution of a laser power between a primary output at the fundamental wavelength and at least one secondary output at the higher harmonic wavelength.