Reflection loss of laser mode from tilted end mirror
Reflection loss of laser mode from tilted end mirror
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DOI：
10.1109/50.17776
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发表时间：
1989-02
影响因子：
4.7
通讯作者：
D. Marcuse
中科院分区：
文献类型：
--
作者：
D. Marcuse
讨论了平板波导的最低阶引导 TE 模式从倾斜端镜的反射。如果将板视为激光器结构的通道或脊波导的有效折射率近似值，则该问题适用于注入激光器。对于 3 μm 的模式宽度，5 度的反射镜倾斜会导致反射损耗超过 25 dB；对于 6μm 宽度的模式，5 度的反射镜倾斜会导致超过 45 dB 的反射损耗。对于小倾斜角，该计算的结果与基于导模的高斯近似的结果一致。对于较大的角度，因此反射损耗较高，结果与高斯近似值明显不同。 >
The reflection of the lowest-order guided TE mode of a slab waveguide from a tilted end mirror is discussed. The problem is applicable to injection lasers if the slab is regarded as an effective refractive index approximation of the channel or ridge waveguide of the laser structure. For a mode width of 3 mu m, 5 degrees mirror tilt results in reflection losses in excess of 25 dB; for modes of 6- mu m width, 5 degrees mirror tilt causes reflection losses in excess of 45 dB. For small tilt angles the results of this calculation agree with those based on a Gaussian approximation of the guided mode. For larger angles, and hence higher reflection losses, the results depart significantly from the Gaussian approximation. >