.Beam collimation of the laser diode with a heteroaxial double half-elliptical cylinder lens[J].Optoelectronics Letters,2010,6(6):435-438 |
Beam collimation of the laser diode with a heteroaxial double half-elliptical cylinder lens |
高全华 |
School of Science,Chang’an University; |
Abstract: |
A new collimation system, the heteroaxial double half-elliptical cylinder lens (HDHECL), is proposed based on the raytracing
method, and the collimation performance of the HDHECL is discussed and compared with conventional lenses. The simulation results
suggest that the refractive index of the HDHECL can be larger than 2, the collimation effect is improved with the increase
of the refractive index in a certain range, and the divergence angle in the fast-axis direction can be compressed to less
than 0.01 mrad theoretically. These results are of significance in theory and practice. |
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