the glass the spot temperature strongly depended on the power density which could be manipulated by adjusting the laser intensity as well as the focus position of the laser beam with respect to the sample surface the laser beam was defocused relative to the polished surface of the glass sample such that the irradiated area was 7 u03bcm in diameter under this condition the crystalline dots were formed by slowly ramping the power density from zero to 20 105 u03bcw u03bcm 2 over a period of 5 seconds upon reaching the desired power density the laser was held at the same power for an additional time in certain embodiments the methods of the invention allow for laser induced formation of sb 2 s 3 single crystal dot and line on the surface of sb 2 s 3 glass a laser induced dot was created on the surface of sb 2 s 3 glass by slowly ramping the laser power density from 0 to 50 u03bcw u03bcm 2 in 5 s followed by steady exposure for 60 s and its extension into a straight line by moving the laser spot at the speed of 1 u03bcm s in certain embodiments the methods of the invention allow for laser induced formation of sb 2 s 3 single crystal dot.