Laser Components now introduces Holo/OR diffractive optics with an axicon structure. The advantages are immense: Irrespective of the fan angle, the ring profile is always perfect because the beam profile is produced using a grating.
These elements may consist of thin fused silica or ZnSe. They are suited, for example, for single-mode fiber lasers, CO2 lasers, and solid-state lasers. The incident beam can exhibit any TEMxy mode. There are more than fifteen standard designs available with a peak-to-peak ring angle of 0.05° to 30° at 1064 nm, for example.