Chinese Optics Letters, 2004, 2 (2): 02119, Published Online: Jun. 6, 2006
Writing of internal gratings in optical glass with a femtosecond laser 
Download： 904次
050.1950 diffraction gratings 140.3390 laser materials processing 320.7110 ultrafast nonlinear optics 220.4610 optical fabrication
Abstract
The writing of an internal diffraction grating in optical glass plate is demonstrated using low-density plasma formation excited by a high-intensity femtosecond Ti:sapphire laser. The same diffraction efficiency at +-1, +-2, and 0 order isachieved by multiple layers writing. The dependences of diffractive efficiency on the irradiated energy, the speed of writing, the numerical aperture (NA) of the focusing objective, and materials are investigated in detail. The grating isbirefringent. It is attributed to residual stress interaction between glass and femtosecond laser pulse.
Guanghua Cheng, Qing Liu, Yishan Wang, Lianjun Yu, Wei Zhao, Guofu Chen. Writing of internal gratings in optical glass with a femtosecond laser[J]. Chinese Optics Letters, 2004, 2(2): 02119.
PDF全文
