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Quick Details

  • Place of Origin: United Kingdom
  • Brand Name: GOOCH & HOUSEGO
  • Model Number: I-QS027-4S4G-U5-ST1
  • Application: Laser Engraving

Packaging & Delivery

Packaging Details standard safety package

Best Wholesale Price GOOCH & HOUSEGO Q-SWITCH for YAG Laser Welding






1.A ‘Stallion’ version of our industry standard water cooled Acousto-optic Q-Switch, for use in high power lamp or diode pumped Nd:YAG lasers.

2.The patent pending ‘Stallion’ manufacturing technique provides superior corrosion resistance whilst maintaining optimum performance and RF power handling capabilities up to 100W.

3.Combining top grade fused silica with high quality optical finishing and in-house anti-reflection coatings, this Q-Switch exhibits very low insertion loss and high damage threshold.

4.In addition to the standard product shown, custom configurations are available for specialized applications. These include alternative housing options, wavelengths and RF frequencies.


Key Features

  • Industry standard for Nd:YAG lasers

  • Superior corrosion resistance

  • Stainless steel cooling channels

  • High damage threshold

  • Push fit water-connectors

  • Up to 100W RF power handling

  • Custom configurations available


  • Material processing:

  • Laser marking

  • Laser engraving

  • Laser cutting

  • Laser drilling

  • Medical (surgery)

  • Lithography


Technical Specifications 

Interaction material:

Fused silicon



AR coating reflectivity:

 < 0.2% per surface

Damage threshold:

 > 1GWcm-2

Transmission (single pass):

 > 99.6%

Static insertion loss:

 ≤ 6% at 50W laser power


 < 1.2:1 (<1.4:1 at 50W RF power)

RF power rating:

 100W cw (max)

Water flow rate:

 > 190cc / minute

Water-cooling channel material:

 Stainless steel 316

Recommended water temperature:

 +22oC to +32oC

Thermal switch cut-off:

 +55oC +/- 5oC


Ordering Codes

Example: I-QS027-4S4G-N5-ST1 (Q-Switch, 27.12MHz, 4mm active aperture, shear mode, fused silica, 1064nm, 4mm OD straight push fit water-connectors, BNC, Stallion housing with M3 mounting holes

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Supplier's Trade Assurance Limit: US $77,000
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