Matching of the wavefront corrector to the statistics of aberrations in the optical system can drastically improve the performance of adaptive optical system and reduce its price and complexity.
Flexible Optical B.V. (OKO Tech) is a small Dutch business operating in the field of research and application-oriented development of laser and high resolution imaging adaptive optics. From its foundation in 1997, OKO offers high-quality deformable mirrors featuring extremely smooth surface with HR metal and dielectric coatings suitable for most demanding imaging and high power laser applications.
Zernike Commander is a simple yet useful software tool suitable for education, real-time aberration visualization as well as for generation of test Hartmann image patterns. The software accepts an wavefront aberration described in the form of Zernike coefficients as well as parameters of Schack-Hartmann wavefront sensor as its input and produces the following graphical results: 3D representation of wavefront phase, interference pattern, far-field intensity distribution, Hartmann pattern, overview of Zernike modes.
OKO introduces a line of laser deformable mirrors (DM). These DMs feature highly reflective coatings with reflectivity of up to 99.998%, for the most frequently used laser wavelengths of 1060 nm, 530 nm, and any other wavelength in the range of 250 to 2500 nm. The standard DMs have light aperture of 30mm and 50mm, and can have 18,19 and 37 actuators (30 and 50mm diameter), and also 59, 69, 79 and 109 actuators (50mm diameter). Mirrors can work with continuous laser loads of up to tens of kW. The power handling ability is enchanced by active cooling of the mirror structure with embedded cooling fan.
In July 2013 OKO released the BeamDoctor system for the beam quality optimisation. The system is based on the BeamTuner software and can include any OKO deformable mirror. Using only the focal spot image, the software automatically, in a number of iterations, optimizes the control signals to the the deformable mirror, to compensate for the static aberration. The BeamTuner includes: The BeamTuner software, a deformable mirror with appropriate computer interface and drivers, and inexpensive CMOS or CCD camera for the focal spot sensor. The system also can be used to compensate aberrations of imaging systems, using real-time image sharpness as the optimization metric.