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Stallion Industry Standard AO Q-Switch product image

I-QS027-4S4V2-x5-ST1 Q-Switch

For use at the wavelength of 1550 nm with an active aperture up to 4 mm, an operating frequency of 27.12 MHz, and with water-cooling.

Full Product Description
1550 nm
Operating frequency:
27.12 MHz
Active aperture:
4.0 mm
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Product description

Combining optimum grade crystalline quartz, high-quality optical finishing, high-grade anti-reflection coatings, with novel acoustic management and optomechanical design techniques, our q-switches achieve exceptional thermal management while maintaining superior beam quality and high optical throughput.

Key features

  • High Damage Threshold
  • Improved thermal management
  • Superior beam quality
  • Superior corrosion resistance [Water Cooled version]
  • Stainless steel cooling channels [Water Cooled version]


Interaction materialInfrasil (water-free fused silica)
Wavelength1550 nm
AR coating reflectivity< 0.2% per surface
Damage threshold> 500 MW cm²
Transmission> 99.6% (single pass)
Operating frequency27.12 MHz
Acoustic modeShear
Active aperture4.0 mm
VSWR< 1.2:1 (<1.4:1 at 50W RF power)
Loss modulation> 60%
RF powerMax: 100W
Water flow rate> 0.2 l / minute
Water-cooling channel materialStainless steel 316
Recommended water temperature+22° C to +32° C
Thermal switch cut-off+55° C +/- 5° C
Storage temperature0 to +50° C

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