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Two-Dimensional Acousto-Optic Q-Switches

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Two-Dimensional Acousto-Optic Q-Switches
C53
  • Two-Dimensional Acousto-Optic Q-Switches

  • Acousto-optic Q-switch (AOQS) is a modulator designed for laser Q-switching applications. CASTECH provides a variety of A-O Q-switches work at wavelength range of 310 nm-3000 nm.
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Product description:

Two dimensional acousto-optic Q-switch (2D-AOQS) is based on one-dimensional acousto-optic Q-switch. Transducers are made on both two mutually orthogonal surfaces of the same acousto-optic medium. The RF signal is transmitted to the surface electrodes of the two transducers at the same time. The two transducers convert the absorbed RF signal into ultrasonic wave and transmit it to the acousto-optic medium at the same time, forming mutually orthogonal diffraction gratings in the medium. The incident light interacts with the orthogonal diffraction grating simultaneously to produce two-dimensional diffracted light, so as to improve the diffraction efficiency. 2D-AOQS aims to improve the diffraction efficiency of a single device and serve as an replacement of using two acousto-optic Q-switches in high-power system.

In order to obtain higher diffraction efficiency, 2D-AOQS requires higher RF power, therefore water cooling is needed to ensure the heat dissipation of the device.

 

Applications:

● Laser marking

● Lithography

● Material processing

● Medical surgery

 

Schematic diagram of two-dimensional acousto-optic Q-switch


 

2D-Q-Switches Model Number:CAQSD-f-a-mt-w-c-h

RF Frequency

(f)

Aperture

(a)

Material

(m)

Mode

(t)

Wavelength

(w)

RF Connector

(c)

Housing

(h)

024

(24 MHz)

027

(27.12 MHz)

041

(40.68 MHz)

068

(68 MHz)

080

(80 MHz)

...

005

(0.5 mm)

010

(1 mm)

020

(2 mm)

030

(3 mm)

040

(4 mm)

...

FS

(Fused Silica)

CQ

(Crystalline Quartz)

C

(Compressional)

1030 nm

1064 nm

AF

(SMA-F)

AM

(SMA-M)

NF

(BNC-F)

NM

(BNC-M)

MF

(MMCX-F)

MM

(MMCX-M)

A80

...

 

 

Typical Specifications*

Frequency

Active Aperture

Wavelength

Transmittance

Modulation Losses

24 MHz

2~6 mm

1064 nm

≥ 99.6%

≥ 90%

27.12 MHz

2~6 mm

1064 nm

≥ 99.6%

≥ 90%

40.68 MHz

2~6 mm

1064 nm

≥ 99.6%

≥ 90%

*Damage Threshold: 1GW/cm² @ 1064 nm, 10 ns,10Hz

 

 

Housing dimensions(mm):

 

 

Housing dimensions(mm):

   

 

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