Adaptive Optics Deformable Mirrors Wavefront Sensors

INRS

Ti:sapphire laser system ALLS

ALLS

INRS - institute national de la recherche scientifique, Quebec, Canada

  • Laser characteristics
  • - 35 fs pulse duration
  • - 10 Hz repetition rate
  • - 350 mJ energy per pulse
  • - 10 TW instatteos power
  • - 2.5 W average power
  • - wavelength 800 nm
  • - 130 mm bimorph mirror

before correction

Before correction

after correction

After correction

The use of poor quality off axis parabola degrades the beam focusing which exhibit strong astigmatism. Intensity of more then 10 W/cm was obtained after correction; the focal spot is close to the diffraction limit.

LULI

Nd:glass laser
LILU, Ecole Polytechnique, France

JAEA

Ti:sapphire laser System
JAEA, Nara, Japan

  • Laser characteristics
  • - 600 ps pulse duration
  • - monopulses every 20 min
  • - 80 J energy per pulse
  • - wavelength 1056 nm
  • - 100 mm bimorph mirror
  • Before
    correction

    Before correction

    St = 0.2

  • After

    correction

    After correction

    St = 0.6

  • Before
    correction

    Before correction
  • After
    correction

    After correction
  • Laser characteristics
  • - 25 fs pulse duration
  • - 10 Hz repetition rate
  • - 600 mJ energy per pulse
  • - wavelength 800 nm
  • - 55 mm bimorph mirror

75% of input power is in first diffraction maximum

Max-Plank Institute

Ti:sapphire laser system ATLAS
Max-Plank-Institute fur Quantenoptic, Garhing, Germany

  • Laser characteristics
  • - 130 fs pulse duration
  • - 10 Hz repetition rate
  • - 800 mJ energy per pulse
  • - wavelength 790 nm
  • - 30 and 80 mm bimorph mirror

Smoothing the intensity with 30 mm


Before mirror

After mirror

After Mirror

Improving the focusability with 80 mm mirror

Before correction

Before correction
St = 0.1

After correction

After correction
St = 0.8

65% of input power is in first diffraction maximum.

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