An Experimental Research of Beam Correcting for A Semiconductor Laser Diode

An experimental beam correcting optical system for laser diode is established for compensating astigmation and circulating the elliptical beam.The system is combined by two prisms,a cylindrical lens and a collimating lens.The results show that the divergence angle of the laser beam can be corrected to less than l mrad,and even reach diffraction limited.This system possesses the advantages of low cost,low power loss,simple structure,and it is convenient to operate.