M. Tang, H. Zhang, J. McCoy, and T. Her, "Tunable Tungsten Nano-Gratings Deposited by a Single Femtosecond Laser Beam on Dielectrics,"
in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies,
OSA Technical Digest Series (CD)
(Optical Society of America, 2007), paper CThJ6.
Sub-wavelength nano-gratings of tungsten were grown using a single femtosecond laser beam on many substrates. Period of the gratings can be tuned through managing the laser power and scanning speed of substrate.