[Invited Paper]High power 980-nm pump lasers

概要

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Over the last five years, the maximum reliable power of Bragg-grating stabilized pump modules has increased by about three times from 150 to 500 mW while the chip failure rate was maintained at less than 500 FITs. This paper reviews some of the key experiments and understandings leading to this progress. The key technologies studied are long cavity length up to 3 mm, internal loss down to 1.5 cm^<-1>, unpumped windows near both facets to increase catastrophic optical mirror damage threshold, vertical far field angle as small as 12.5 degree and low thermal impedance by p-down bonding.
社団法人電子情報通信学会の論文
2003-12-13