Electro-Optic Phase Modulator by QUBIG

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The PM8-VIS from QUBIG is a Resonant Lithium Niobate (LiNbO3) Electro-Optic Phase Modulator that operates at a wavelength of 360 nm - 720 nm. It has a resonance frequency of 81 MHz and bandwidth of 439 kHz. This electro-optic phase modulator has a quality factor of 185 and an aperture size of 3 mm x 3 mm.  It has a wavelength distortion of lambda/4 (at 633 nm) and an optical intensity of up to 1 W/mm2. This electro-optic phase modulator has an AR coating with a transmittance of greater than 98%.

The PM8-VIS features damped piezo- and acoustic resonances with low residual amplitude modulation (RAM) options. It requires an RF power of 13.7 dBm (for 1 rad at 532 nm) and consumes an RF power of up to 1 W. This electro-optic phase modulator is available in a housing that measures 40 (L) mm x 40 (W) mm x 40 (H) mm and is ideal for laser frequency stabilization (PDH, FM/MTS), laser cooling / repumper generation, quantum state manipulation, spectroscopy, and spectral broadening applications.

Product Specifications

Product Details

  • Part Number
  • Manufacturer
  • Description
    360 nm - 720 nm, Electro-Optic Phase Modulator for Spectroscopy Applications

Electrical Specifications

  • RF Input Power
    13.7 dBm, 1 W
  • Max. RF Power (No damage)
    1 W
  • Required RF Power@1rad
    13.7 dBm
  • Resonance Frequency
    81 MHz
  • Electro-Optical(EO) Bandwidth
    439 kHz

Optical Specifications

  • Aperture
    3 x 3 mm2
  • Bandwidth
    439 kHz
  • Transmission
  • Transmitted Wavefront Distortion
    λ/4 nm
  • Operating Wavelength
    360 to 720 nm
  • Crystal
    Magnesium Oxide-Doped Lithium Niobate (MgO:LiNbO3)
  • Optical Intensity
    <1 W/mm2

Fiber Parameters

  • Type (Fiber-Coupled)


  • Applications
    Laser frequency stabilization (PDH, FM/MTS), Laser cooling / Repumper generation, Quantum state manipulation, Spectroscopy, Spectral broadening

Technical Documents

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