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Acousto-Optic Q-Switches

Intracavity Q-switching devices with high damage threshold and high modulation loss
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Intracavity Q-switching devices with high damage threshold and high modulation loss

 

The Acousto-optic Q-switches (AOQS) are a type of Q-switch designed for laser Q-switching applications. At the beginning of pumping, the AOQS increases the diffraction loss in the cavity, causing the cavity to be in a low Q-value state, which increases the oscillation threshold and prevents oscillation from occurring. This allows a large number of inverted particles in the upper energy level to accumulate. When the accumulation reaches saturation, suddenly removing the diffraction loss causes the cavity loss to decrease and the Q-value to suddenly increase, rapidly establishing laser oscillation. In a very short period of time, the inverted particles in the upper energy level are consumed and converted into optical energy in the cavity, resulting in high-peak-power giant pulse laser output.

CASTECH can provide a variety of A-O Q-switches with operating wavelength ranges covering 310 nm-10.6 um. Our products have high transmittance (single pass transmittance up to 99.6%), fast switching speed, strong shut-off capability, high damage threshold, and excellent pulse stability. To achieve higher diffraction efficiency, large aperture A-O Q-switches require higher RF power injection. Therefore, water cooling is needed to ensure proper heat dissipation of the device.

 

Applications:

Laser marking
●Photolithography
●Medical procedure
●Material processing

CASTECH's products are produced independently throughout the entire process and can be customized according to customer needs. Refer to the following list for standard products.

 

 

 


 

Keyword:
Acousto-optic Q-switch
laser Q-switching
high switching speed
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We could not find any corresponding parameters, please add them to the properties table

Model Number:CAQS-f-a-mt-w-c-h 

Center Frequency (f)

Aperture (a)

Material (m)

Mode (t)

Wavelength (w)

RF Connector (c)

Housing (h)

041 (40.68 MHz)

010 (1 mm)

CQ 

TE 

C (Compressional)

266 (266nm)

AF (SMA-F)

A01

 

 

Typical Specifications

Wavelength

Aperture

Operation frequency

Loss modulation

Material

1030-1064 nm

1-6 mm

24, 27.12, 40.68, 68, 80 MHz

>85 %

FS

1030-1064 nm

1-3 mm

40.68, 68, 80, 100 MHz

>85 %

CQ

1319-1342 nm

1 mm

80 MHz

>85 %

CQ

1550 nm

1 mm

80 MHz

>85 %

CQ

1900-2100 nm

4 mm

40.68 MHz

≥75 %

CQ

9.4-10.6 μm

11.6 mm

40.68 MHz

≥85 %

/

*Damage threshold >1.0 GW/cm² @ 1064 nm, 10 ns,10 Hz

 

Housing dimensions(mm):

  

 

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  • Acousto-Optic Q-Switches

  • Intracavity Q-switching devices with high damage threshold and high modulation loss
Description
Parameters
CAS'TechClass
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Intracavity Q-switching devices with high damage threshold and high modulation loss

 

The Acousto-optic Q-switches (AOQS) are a type of Q-switch designed for laser Q-switching applications. At the beginning of pumping, the AOQS increases the diffraction loss in the cavity, causing the cavity to be in a low Q-value state, which increases the oscillation threshold and prevents oscillation from occurring. This allows a large number of inverted particles in the upper energy level to accumulate. When the accumulation reaches saturation, suddenly removing the diffraction loss causes the cavity loss to decrease and the Q-value to suddenly increase, rapidly establishing laser oscillation. In a very short period of time, the inverted particles in the upper energy level are consumed and converted into optical energy in the cavity, resulting in high-peak-power giant pulse laser output.

CASTECH can provide a variety of A-O Q-switches with operating wavelength ranges covering 310 nm-10.6 um. Our products have high transmittance (single pass transmittance up to 99.6%), fast switching speed, strong shut-off capability, high damage threshold, and excellent pulse stability. To achieve higher diffraction efficiency, large aperture A-O Q-switches require higher RF power injection. Therefore, water cooling is needed to ensure proper heat dissipation of the device.

 

Applications:

Laser marking
●Photolithography
●Medical procedure
●Material processing

CASTECH's products are produced independently throughout the entire process and can be customized according to customer needs. Refer to the following list for standard products.

 

 

 


 

Model Number:CAQS-f-a-mt-w-c-h 

Center Frequency (f)

Aperture (a)

Material (m)

Mode (t)

Wavelength (w)

RF Connector (c)

Housing (h)

041 (40.68 MHz)

010 (1 mm)

CQ 

TE 

C (Compressional)

266 (266nm)

AF (SMA-F)

A01

 

 

Typical Specifications

Wavelength

Aperture

Operation frequency

Loss modulation

Material

1030-1064 nm

1-6 mm

24, 27.12, 40.68, 68, 80 MHz

>85 %

FS

1030-1064 nm

1-3 mm

40.68, 68, 80, 100 MHz

>85 %

CQ

1319-1342 nm

1 mm

80 MHz

>85 %

CQ

1550 nm

1 mm

80 MHz

>85 %

CQ

1900-2100 nm

4 mm

40.68 MHz

≥75 %

CQ

9.4-10.6 μm

11.6 mm

40.68 MHz

≥85 %

/

*Damage threshold >1.0 GW/cm² @ 1064 nm, 10 ns,10 Hz

 

Housing dimensions(mm):

  

 

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