摘要
非稳腔在大菲涅耳数条件下可实现光的高效提取效率,也可保持高光束质量。设计了一款用于Nd:YAG板条增益介质的传导冷却端面抽运结构的望远镜型离轴介稳-非稳混合谐振腔,输出耦合镜为变反镜。该混合腔的宽度方向(板条增益介质的x方向)为非稳腔,厚度方向(板条增益介质的y方向)为介稳腔。通过理论分析得出,当抽运功率为10kW时,该介稳-非稳混合腔结构的输出功率为4428.7 W,光-光转换效率为0.4429。
An unstable resonator can obtain high extraction efficiency of light as well as high beam quality under the condition of the large Fresnel number. We design a telescopic off-axis metastable-unstable hybrid resonator with conduction-cooled end-pumped structure which can be used as the Nd： YAG slab gain medium, and its output coupling mirror is a variable reflectivity mirror. The resonator in the width direction of the hybrid resonator （the x direction of the slab gain medium） i：san unstable resonator, and the resonator in the thickness direction （the y direction of the slab gain medium） is a metastable resonator. Through the theoretical analysis, an output power of 4428.7 W of this metastable-unstable hybrid resonator structure and an optical-optical efficiency of 0. 4429 can be obtained when the pump power is 10 kW.
出处
《激光与光电子学进展》
CSCD
北大核心
2017年第10期274-280,共7页
Laser & Optoelectronics Progress
关键词
激光器
半导体激光器
激光谐振腔
传导冷却端面抽运结构
变反镜
lasers
semiconductor lasers
laser resonator
conduction-cooled end-pumped structure
variable reflectivity mirror
