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 Yong Hee
BBO Pockels Cell
    Publish time 2022-12-30 10:46    
BBO Pockels Cell

BBO-based pockels cell are used to change the polarization state of light passing at wavelengths from the UV to more than 2 μm, low piezoelectric ringing makes these Pockels cells attractive for the control of high-power and high pulse repetition rate lasers. The quarter-wave voltage is relative to the ratio of crystal length and electrode spacing, therefore, compact aperture devices tend to exhibit lower quarter-wave, but even for 2.5 mm aperture tools the quarter-wave voltage remains 4 kV at 1064 nm, which is quite high. Double crystal design has been used to cut down the required voltages and also to enable operation in half-wave mode with quick switching times.


Advantages:

High Repetition Rate

High peak power damage resistance

Low absorption

UV Transmission

Low Acoustic Noise


Applications:

High repetition rate DPSS Q-Switch

High repetition rate Regenerative Amplifier control

Laser Cavity Dumping

Beam Chopper


Specifications:

Typical Dimension of Pockels cell

Ф25.4*35mmФ25.4*40mmФ25.4*35mmФ25.4*40mmФ25.4*35mmФ25.4*40mm
Dimension of Crystal3x3x20mm
3x3x25mm4x4x20mm4x4x25mm5x5x20mm5x5x25mm
Clear ApertureФ2.6mmФ2.6mmФ3.6mmФ3.6mmФ4.6mmФ4.6mm
Single pass optical transmission>98%>98%>98%>98%>98%>98%
Extinction Ratio@1064nm>1000:1  (30db)>1000:1  (30db)>1000:1  (30db)>1000:1  (30db)>1000:1  (30db)>1000:1  (30db)
λ/4 Voltage3500V2800V4900V3900V5900V4700V
Capacitance<3.0pF<3.0pF<3.0pF<3.0pF<3.0pF<3.0pF
Damage Threshold                                                                              750MW/cm²@1064nm.10ns,10Hz


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