Fig. 1. Schematic of femtosecond TPP fabrication system

Fig. 2. Schematic of Fourier computer generated holography

Fig. 3. Holograms of blazed gratings. (a)(b) Blazed grating with different periods; (c)(d) blazed grating with different active zones

Fig. 4. SEM images of microstructures fabricated with computer generated holograms. (a)(b)(c) Corresponding to the blazed grating periods of 540 pixel, 1080 pixel and 2160 pixel; results fabricated (d) without energy control and (e) with real-time energy control

Fig. 5. Schematic and microscopic images of annular microstructures fabricated with real-time energy control. (a) Schematic of annular structures fabricated with different a values; (b)(c)(d) microscopic images captured at focal plane, focal plane 1 mm to the focal plane and 2 mm to the focal plane, respectively