公开(公告)号：EP2191546B1

公开(公告)日：2018-01-17

申请号：EP08807113.9

申请日：2008-09-18

申请人： II-VI Laser Enterprise GmbH

发明人： KREJCI, Martin ,  LICHTENSTEIN, Norbert ,  WEISS, Stefan ,  TROGER, Hans Jörg

IPC分类号： H01S5/024 ,  H01S5/022 ,  H01S5/40 ,  H01S5/00

CPC分类号： H01S5/4031 ,  H01S5/0021 ,  H01S5/0224 ,  H01S5/02272 ,  H01S5/02476 ,  H01S5/02492

摘要： A high power laser source comprises a bar of laser diodes, a submount onto which said laser bar is affixed, and a cooler onto which said submount is affixed. The laser bar has a first coefficient of thermal expansion (CTEbar), the submount has a second coefficient of thermal expansion (CTEsub), and the cooler has a third coefficient of thermal expansion (CTEcool) the third coefficient (CTEcool) being higher than both said first coefficient (CTEbar) and said second coefficient (CTEsub). Contrary to the usual approach with a CTEsub matching the CTEbar, the second coefficient (CTEsub) is selected lower than both said first coefficient (CTEbar) and said third coefficient (CTEcool) according to the invention. A preferred range is CTEsub=k*CTEbar, with 0.4