摘要
介绍了一种大功率单频、自稳频、高输出功率ＨｅＮｅ激光器功率估算方法的改进。用这种方法的估算值与实际输出功率值符合得较好。
Estimation of output power for high output power single frequency He Ne laser of self stabilized frequency is introduced.The theory estimation results of output power much approximate to measurement data.Two series of single and self stabilization frequency high output power external cavity He Ne laser are obtained with inhomogeneous longitudinal magnetic fields and high gas pressure.With the discharge tube of one meter (cavity length 1140mm) and 1.8 meters length (cavity length 1800mm) the output power are 18～24mW and 40～52mW respectively .The coherence length of these lasers exceeds 14 meters.Whithout any external frequency stabilization method the instability of the single frequency are 6.175×10 -9 ( τ ≤10s),3.38×10 -9 ( τ ≤1s) for one meter laser,and 2×10 -8 ( τ ≤10s),1.1×10 -8 ( τ ≤1s) for 1.8 meters by multi measurements of the beat frequency between the single He Ne laser and an iodine stabilized He Ne laser.
出处
《激光技术》
CAS
CSCD
北大核心
1998年第6期357-361,共5页
Laser Technology
关键词
功率估算
单频
自稳频
氦氖激光器
output power estimation single frequency self stabilization frequency He Ne laser
