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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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Acousto-Optic Devices

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Description

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CAS'TechClass

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

Schematic diagram of frequency shifter

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)

S

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
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

Schematic diagram of frequency shifter

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)

S

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