给出高斯入射束反射时角位移直接计算式，适用于任意入射角和反射介质有吸收的情况。计算式在布儒斯特角上不存在发散困难。对于p偏振和s偏振均适用，只要令g1=n1，g2=0计算所得即为s偏振的角位移。

Directly calculating expression of angular shift of a Gaussian beam reflected by absorbing medium interface is given, which can be applied to any incident angle and does not diverge at Brewster angle. This expression is symmetrical for both p and s polarization. Setting g1=n 1 and g2=0, we will obtain the angular shift of s polarization beam.