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Acousto-Optic Frequency Shifters

The acousto-optic frequency shifter with RF driver is used to modify the frequency of the optical beam. CASTECH provides customized specs including center frequency and the shifted frequency value.
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Product description:

The acousto-optic frequency shifter(AOFS) with RF driver is used to modify the frequency of the optical beam. Due to the Doppler shift, the frequency shift of 1st order diffracted light (variation quantity of wavelength) equals to the frequency of RF signal (wavelength). If the incident direction of acoustic wave and optic wave are the same, the shifted laser frequency value will be  positive, on the other hand, if the incident direction of acoustic wave and optic wave are opposite, the shifted laser frequency value will be negative.

Applications such as interference-based optical techniques require a high extinction ratio between the diffracted and undiffracted beam.

CASTECH provides customized specs including center frequency and the shifted frequency value.

 

Applications:

● Interferometry

● Laser cooling

● Laser Doppler velocimetry

● Optical heterodyne detection

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:Free-Space Frequency Shifters  CAFS-f-r-a-mt-w-c-h

                    Fiber-Coupled Frequency Shifters  CAFSF-f-r-mtq-xb-w-c-h

Center Frequency

 (f)

RE Range(r)

Aperture

(a)*

Material(m)

Mode(t)

FrequencyMode (q)***

Fiber Type (a)**

Fiber Termina(b)**

Wavelength(w)

RF

Connector

(c)

Housing

(h)

070 (70MHz)

10 (±10 MHz)

… 

010 (1 mm)

CQ 

TE 

C (Compressional)

S (Shear)

D ( Beat Frequency)

S (Sum Frequency)

1(HI 1060)

B(Bare Fiber)

F(FC/APC)

633 (633nm)

AF (SMA-F)

A17

* Only applicable to free space type        **Only applicable to fiber coupled type      ***Only applicable to coupled cascade combination type

 

 

Typical Specifications

Wavelength

Active Aperture

Operation frequency

Material

355-532 nm

1-3 mm

110 MHz

CQ

532 nm

2 mm

80 MHz

TE

633 nm

1-3 mm

20 MHz

TE

1064 nm

1 mm

70±15 MHz

TE

1550 nm

1 mm

110±10 MHz

TE

1550 nm

1.5 mm

80 MHz

TE

 

Keyword:
free space fiber coupled Acousto-Optic Frequency Shifter
AOFS with RF
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Free-Space Frequency Shifters Model Number:CAFS-f-r-a-mt-w-c-h

Center Frequency

(f)

RF Range

(r)

Aperture

(a)

Meterial

(m)

Mode

(t)

Wavelength(w)

RF

Connector

(c)

Housing

(h)

41 MHz

70 MHz

73 MHz

80 MHz

83 MHz

100 MHz

...

3

(±3 MHz)

10

(±10 MHz)

...

010

(1 mm)

020

(2 mm)

030

(3 mm)

040

(4 mm)

050

(5 mm)

060

(6 mm)

...

TE

(TeO2)

C

(Compressional)

S

(Shear)

583 nm

770 nm

1030 nm

1064 nm

...

AF

(SMA-F) 

AM

(SMA-M)

...

A17

A33

B07

B17

...

 

 

Typical Specifications

Center Frequency

Active Aperture

Wavelength

Transmittance

Frequency Shift Range

Diffraction Efficiency

70 MHz

0.5~2 mm

1064 nm

 ≥ 99.0%

± 3 MHz

≥ 85%

80 MHz

0.5~2 mm

1064 nm

≥ 99.0%

± 10 MHz

≥ 80%

80 MHz

0.5~2 mm

1550 nm

≥ 99.0%

± 15 MHz

≥ 70%

 

 

Housing dimensions(mm):

A17                                                                                                                 B07

   

 

 


 

 

Fiber-Coupled Frequency Shifters Model Number:CAFSF-f-p-mqat-w-c-h

RF Frequency

(f)

RF Power

(p)

Material

(m)

Crystal Quantity

(q)

Fiber Type

(a) 

Fiber Terminal

(t)

Wavelength(w)

RF

Connector(c)

Housing

(h)

 

41 MHz

73 MHz

80 MHz

100 MHz

120 MHz

150 MHz

200 MHz

...

020

(≤2 W)

025

(≤2.5 W)

...

TE

(TeO2)

D

1

(HI1060)

2

(PM980)

3

(PM 10/125)

4

(10/125)

5

(20/125)

6

(10/125GDF)

7

(PM1550XP)

8

(PM1060L)

9

(SM28e)

...

 B

(Bare Fiber)

F

(FC/APC)

1030 nm

1064 nm

1550 nm

...

AF

(SMA-F)

AM

(SMA-M)

...

A61

A91

B03

...

 

 

Typical Specifications

Center Frequency

Wavelength

Insertion Loss

Extinction Ratio

Frequency Shift Range

80 MHz

1550 nm

≤ 2.5 dB

≥ 45 dB

± 3 MHz

 

 

Housing dimensions(mm):

A17                                                                                                                 B07

   

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Acousto-Optic Frequency Shifters
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  • Acousto-Optic Frequency Shifters

  • The acousto-optic frequency shifter with RF driver is used to modify the frequency of the optical beam. CASTECH provides customized specs including center frequency and the shifted frequency value.
Description
Parameters
CAS'TechClass
Download

Product description:

The acousto-optic frequency shifter(AOFS) with RF driver is used to modify the frequency of the optical beam. Due to the Doppler shift, the frequency shift of 1st order diffracted light (variation quantity of wavelength) equals to the frequency of RF signal (wavelength). If the incident direction of acoustic wave and optic wave are the same, the shifted laser frequency value will be  positive, on the other hand, if the incident direction of acoustic wave and optic wave are opposite, the shifted laser frequency value will be negative.

Applications such as interference-based optical techniques require a high extinction ratio between the diffracted and undiffracted beam.

CASTECH provides customized specs including center frequency and the shifted frequency value.

 

Applications:

● Interferometry

● Laser cooling

● Laser Doppler velocimetry

● Optical heterodyne detection

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:Free-Space Frequency Shifters  CAFS-f-r-a-mt-w-c-h

                    Fiber-Coupled Frequency Shifters  CAFSF-f-r-mtq-xb-w-c-h

Center Frequency

 (f)

RE Range(r)

Aperture

(a)*

Material(m)

Mode(t)

FrequencyMode (q)***

Fiber Type (a)**

Fiber Termina(b)**

Wavelength(w)

RF

Connector

(c)

Housing

(h)

070 (70MHz)

10 (±10 MHz)

… 

010 (1 mm)

CQ 

TE 

C (Compressional)

S (Shear)

D ( Beat Frequency)

S (Sum Frequency)

1(HI 1060)

B(Bare Fiber)

F(FC/APC)

633 (633nm)

AF (SMA-F)

A17

* Only applicable to free space type        **Only applicable to fiber coupled type      ***Only applicable to coupled cascade combination type

 

 

Typical Specifications

Wavelength

Active Aperture

Operation frequency

Material

355-532 nm

1-3 mm

110 MHz

CQ

532 nm

2 mm

80 MHz

TE

633 nm

1-3 mm

20 MHz

TE

1064 nm

1 mm

70±15 MHz

TE

1550 nm

1 mm

110±10 MHz

TE

1550 nm

1.5 mm

80 MHz

TE

 

 

Free-Space Frequency Shifters Model Number:CAFS-f-r-a-mt-w-c-h

Center Frequency

(f)

RF Range

(r)

Aperture

(a)

Meterial

(m)

Mode

(t)

Wavelength(w)

RF

Connector

(c)

Housing

(h)

41 MHz

70 MHz

73 MHz

80 MHz

83 MHz

100 MHz

...

3

(±3 MHz)

10

(±10 MHz)

...

010

(1 mm)

020

(2 mm)

030

(3 mm)

040

(4 mm)

050

(5 mm)

060

(6 mm)

...

TE

(TeO2)

C

(Compressional)

S

(Shear)

583 nm

770 nm

1030 nm

1064 nm

...

AF

(SMA-F) 

AM

(SMA-M)

...

A17

A33

B07

B17

...

 

 

Typical Specifications

Center Frequency

Active Aperture

Wavelength

Transmittance

Frequency Shift Range

Diffraction Efficiency

70 MHz

0.5~2 mm

1064 nm

 ≥ 99.0%

± 3 MHz

≥ 85%

80 MHz

0.5~2 mm

1064 nm

≥ 99.0%

± 10 MHz

≥ 80%

80 MHz

0.5~2 mm

1550 nm

≥ 99.0%

± 15 MHz

≥ 70%

 

 

Housing dimensions(mm):

A17                                                                                                                 B07

   

 

 


 

 

Fiber-Coupled Frequency Shifters Model Number:CAFSF-f-p-mqat-w-c-h

RF Frequency

(f)

RF Power

(p)

Material

(m)

Crystal Quantity

(q)

Fiber Type

(a) 

Fiber Terminal

(t)

Wavelength(w)

RF

Connector(c)

Housing

(h)

 

41 MHz

73 MHz

80 MHz

100 MHz

120 MHz

150 MHz

200 MHz

...

020

(≤2 W)

025

(≤2.5 W)

...

TE

(TeO2)

D

1

(HI1060)

2

(PM980)

3

(PM 10/125)

4

(10/125)

5

(20/125)

6

(10/125GDF)

7

(PM1550XP)

8

(PM1060L)

9

(SM28e)

...

 B

(Bare Fiber)

F

(FC/APC)

1030 nm

1064 nm

1550 nm

...

AF

(SMA-F)

AM

(SMA-M)

...

A61

A91

B03

...

 

 

Typical Specifications

Center Frequency

Wavelength

Insertion Loss

Extinction Ratio

Frequency Shift Range

80 MHz

1550 nm

≤ 2.5 dB

≥ 45 dB

± 3 MHz

 

 

Housing dimensions(mm):

A17                                                                                                                 B07

   

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