One laser beamexpander is developed with clear aperture Φ=300mm and magnification β=30,Visual field 2ω=±1mrad.It works at three kinds of wavelength.The major wavelength is λ=0.6328nm,the others are λ=0.532μm,1.064μm.All the glass elements are made of Schott fused silica.The frontobjective focal length F=800 mm which is high order aspherical surface.After measurement with interferometer,the wavefront error of system peak to valley (PV) is better than λ/7,root mean square (RMS) is better than λ/50.
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袁莉,潘宝珠,郝沛明,周洪庆.大口径平像场激光扩束器光学系统的研制[J].激光与红外,2007,37(7):672~675 YUAN Li, PAN Bao-zhu, HAO Pei-ming, ZHOU Hong-qing. Study of the Laser Beamexpander Optical System With Large Aperture and Noncurvature of Field[J]. LASER & INFRARED,2007,37(7):672~675