High damage threshold sensor

Louise Smyth

Ophir Photonics Group has announced the 3A-PF-12 thermal power/energy laser measurement sensor for short pulsed lasers. Part of the 3A-P family of laser sensors that measure power up to 3W, the 3A-PF-12 is an ultra sensitive sensor that can measure powers from as low as 15µW up to 3W and energies from as low as 20µJ to 2J. The new sensor replaces the P type absorber with the high damage threshold PF type, giving it the industry's highest energy density damage threshold for repetitive pulses.

Designed for use with YAG and its harmonics and excimer lasers, the 3A-PF-12 is a thermal power/energy sensor with low noise of 4µW and low drift of 5-30µW. It delivers the highest energy density damage threshold in the industry, up to 1.5J/cm2 for repetitive ns pulses. The sensor features a 12mm aperture and broad wavelength range of 0.15–20µm.