Our AO Q-Switches offer low insertion loss and are capable of handling very high peak power, as their design considers the cavity length, repetition rate, wavelength, beam diameter, polarization state, and output power of a laser to achieve the best acousto-optic Q-switch solution.

Whether you are designing a laser for materials processing 

 such as engraving, cutting, or drilling, or creating a full system for medical surgery, lithography, or rapid prototyping, we can find the Q-switch and 

 to balance your performance, cost, and reliability needs.

 for a solution dedicated to your OEM application.  

Acousto-optic Q-switches (AOQS) work within laser cavities by generating high intensity, pulsed light by actively controlling the Q-factor of the cavity.

Acousto-Optic **Q-switches**

Small Form-Factor Variable Optical Delay Line

Embedded Image Periscope and Sighting Systems

Environmental, Social and Governance (ESG)

Super Q-Switch product image - A rectangular G&H optical device with a metallic housing labeled “MODEL NO: G&H” and “SERIAL NO.” It features two cylindrical connectors on the top, one gold coaxial connector, and a prominent circular optical aperture on the side. The unit is cleanly machined, indicating high precision for photonics or laser system applications.

For use at the wavelength of 1064 nm, with an active aperture up to 6.5 mm, an operating frequency of 24 or 27.12 MHz, and with water-cooling. 

Super Q-Switch

Stallion Industry Standard AO Q-Switch product image - A compact, metallic G&H optical component labeled “STALLION,” featuring multiple top-mounted black fluid or air hose connectors, a visible side optical aperture, and two bottom-mounted coaxial connectors. The device has a robust, precision-engineered design, suitable for integration into optical or photonic systems.

Stallion Industry Standard AO Q-Switch product image

For use at the wavelength of 1064 nm, with an active aperture up to 4 mm, an operating frequency of 68 MHz, and with water-cooling. 

VHE AO Q-Switch

Industry Standard AO Q-Switch product image - A G&H Industry Standard AO Q-Switch device featuring a rectangular metal housing with labeling for model and serial number. The unit has two metallic fluid fittings on the top, a gold coaxial connector, a larger optical port on the side, and a secondary connector on the front panel. The device is used in laser systems to control beam timing and modulation.

Industry Standard AO Q-Switch product image

For use at the wavelength of 1064 nm, with an active aperture up to 8 mm, an operating frequency of 24, 27.12, 40.68, or 68 MHz, and with water-cooling. 

Industry Standard AO Q-Switch

For use at the wavelength of 1064 nm, with an active aperture up to 8 mm, an operating frequency of 24, 27.12, 40.68, or 68 MHz, with water-cooling.

Stallion Industry Standard AO Q-Switch

I-M080-2C10G-4-AM3 product image - Rendered image of a compact G&H acousto-optic modulator with a cutaway view showing internal optical and electronic components. The metal housing reveals a red crystal, gold coils, and internal wiring, with a fiber optic cable attached to the front for input/output.

For use at the wavelength of 1064 nm, with an active aperture of 1.8 mm, with an operating frequency of 40.68 MHz, and with conduction-cooling.

I-QS041-1.8C10G-4-GH21 AO Q-Switch

For use at the wavelength of 2100 nm, with an active aperture up to 4 mm, an operating frequency of 27.12 MHz, and with water-cooling. 

I-QS041-5C10V5-x5-ST3 Q-Switch

G&H experts can customize products to your requirements. 

Acousto-Optic Q-switches