Flexible Optical B.V. (OKO Technologies)

41. How good is the initial figure of OKO deformable mirrors?
(FAQs/General)

The surface quality of all OKO mirrors is similar to any other solid reflective optics produced by leading manufacturers. It is good enough to work with very low scattering in the whole visible spectrum. ...

42. How linear is the PDM response?
(FAQs/PDMs)

OKO piezoelectric mirrors have linear response and feature 7 to 15% hysteresis and up to 2% creep.  ...

43. How large can be the amplitude of the corrected aberrations?
(FAQs/General)

Standard 37-ch 15-mm mirror provides about 20000 nm of wavefront deformation for defocus. Third and fifth order aberrations with wavefront amplitudes of up to 3000 nm can be corrected. In general the dynamic ...

44. How good the mirrors will correct our aberrations?
(FAQs/General)

Information about the spatial and temporal spectra of the aberrated wavefronts is required for a good answer to this question. Membrane mirrors in general are good in correcting smooth continuous aberrations. ...

45. What is PDM?
(FAQs/PDMs)

PDM stands for “Piezoelectric Deformable Mirror”.  ...

46. Linear deformable mirrors
(Products/Wavefront correctors)

OKO Tech produces membrane and piezoelectric DM for ultrafast pulse control. These mirrors are usually used in a stretcher for selective control of the delays of chosen spectral components. Linear PDM ...

47. What is the power handling ability of OKO DM?
(FAQs/General)

... loads of up to 500 W and even 1 kW in some cases. Piezoelectric mirrors can be coated with high-power HR coatings, making them suitable for optical load of up to 1 kW and higher - in some special cases. ...

48. How good is MMDM optically?
(FAQs/MMDMs)

... A mirror a diameter of 10mm will have less than 1 fringe of astigmatism (averaged over a number of devices), an average mirror with a diameter of 15mm has about 2 fringes of astigmatism. These aberrations ...

49. How large is MMDM?
(FAQs/MMDMs)

Standard OKO mirrors are circular with a diameter of 10mm and 15mm. We can custom develop devices of up to one inch in diameter and with various geometries of reflective membrane - we have experience with ...

50. How linear is the MMDM response?
(FAQs/MMDMs)

The displacement of the mirror surface is proportional to the SQUARE of the applied voltage. The mirror response can be linearized using the operation of square root. For 8-bit biased digital control the ...

51. Electronics
(Category)

Frequently asked quesstions about the high-voltage amplifiers and DAC drivers used with deformable mirrors ...

52. MMDM
(Category)

Micromachined membrane deformable mirrors (MMDM) with apertures in the range of 10 to 50 mm represent a high-quality affordable solution for the correction of dynamic wavefront deformations in laser systems ...