Comparison of stacked actuator and bimorph mirrors for scattered laser-beam focusing

Bimorph deformable mirrors can be successively used to improve focusing of a laser beam passed through a moderately scattering medium with optical density in the range of 1 ... 10. In this paper we investigate the efficiency of the stacked actuator deformable mirror with 61 piezo stacks and clear aperture of 60 mm. We demonstrate that such kind of mirrors also can be used to optimize the focal spot in the far-field. Shack-Hartmann sensor was used to measure the averaged wavefront distortions and CCD camera was used to estimate the intensity distribution of the focal spot in the far-field.

[1]  Dan Zhu,et al.  Visible and near-infrared spectroscopy for distinguishing malignant tumor tissue from benign tumor and normal breast tissues in vitro , 2013, Journal of biomedical optics.

[2]  A. Kudryashov,et al.  Real-time 1.5 kHz adaptive optical system to correct for atmospheric turbulence. , 2020, Optics express.

[3]  Changhuei Yang,et al.  Focusing on moving targets through scattering samples. , 2014, Optica.

[4]  Yan Liu,et al.  Focusing light through scattering media by full-polarization digital optical phase conjugation. , 2016, Optics letters.

[5]  Demetri Psaltis,et al.  Imaging through turbid layers by scanning the phase conjugated second harmonic radiation from a nanoparticle. , 2010, Optics express.

[6]  G. Ripandelli,et al.  Optical coherence tomography. , 1998, Seminars in ophthalmology.

[7]  Joseph W. Goodman,et al.  WAVEFRONT‐RECONSTRUCTION IMAGING THROUGH RANDOM MEDIA , 1966 .

[8]  William J. Brown,et al.  Deep tissue imaging using spectroscopic analysis of multiply scattered light , 2014 .

[9]  Alexis Kudryashov,et al.  Laser beam focusing through the dense multiple scattering suspension using bimorph mirror , 2019, BiOS.

[10]  B. Berne,et al.  Dynamic Light Scattering: With Applications to Chemistry, Biology, and Physics , 1976 .

[11]  K. Wagner,et al.  Focusing and scanning through scattering media in microseconds , 2019, Optica.

[12]  G. Lerosey,et al.  Controlling waves in space and time for imaging and focusing in complex media , 2012, Nature Photonics.

[13]  H. Kogelnik,et al.  Holographic Imaging Through a Random Medium , 1968 .

[14]  R. Paxman,et al.  Focusing through dynamic scattering media. , 2012, Optics express.

[15]  C. Tropea,et al.  Light Scattering from Small Particles , 2003 .

[16]  O. Katz,et al.  Looking around corners and through thin turbid layers in real time with scattered incoherent light , 2012, Nature Photonics.

[17]  Julia Sheldakova,et al.  Absolute calibration of a Shack-Hartmann wavefront sensor for measurements of wavefronts , 2019, OPTO.

[18]  D. Conkey,et al.  High-speed scattering medium characterization with application to focusing light through turbid media. , 2012, Optics express.

[19]  J. Bertolotti,et al.  Non-invasive imaging through opaque scattering layers , 2012, Nature.

[20]  A. Mosk,et al.  Focusing coherent light through opaque strongly scattering media. , 2007, Optics letters.

[21]  A. L. Rukosuev,et al.  The use of M2 meter to correct for high-power laser aberrations , 2005, SPIE LASE.

[22]  Yan Liu,et al.  Focusing light through scattering media by transmission matrix inversion. , 2017, Optics express.

[23]  S. Popoff,et al.  Measuring the transmission matrix in optics: an approach to the study and control of light propagation in disordered media. , 2009, Physical review letters.

[24]  A. Kudryashov,et al.  Laser beam focusing through a moderately scattering medium using a bimorph mirror. , 2020, Optics express.