Modulators & Fixed Frequency Shifters

Acousto-optic modulators are used to vary and control laser beam intensity. They can also be used as fixed frequency shifters due to fact that the diffracted order is frequency shifted by the amount of the carrier frequency.

Modulators

An Acousto Optic Modulator is intended to vary the intensity of the incoming laser beam. Also known as Amplitude Modulation (AM), it can be either digital (ON/OFF) or analog (sine, sawtooth, random…). The key parameter of a modulator is its rise/fall time, which defines the achievable « speed » of the modulation. The rise/fall time is directly proportional to the beam diameter inside the modulator.

Fixed Frequency Shifters

The Acousto Optic interaction inherently introduces a frequency shift in the diffracted order. The amount of the frequency shift equals to the injected carrier frequency and it can be upshifted or downshifted depending on the selected input Bragg angle. A Modulator shares the same properties as a Fixed Frequency Shifter.

Our models of Modulators & Fixed Frequency Shifters

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	Model	Wavelength (nm)	Aperture/mm²	Frequency Shift (MHz)	Rise Time (ns)	Add to quote
	MT80-A1-VIS	450-700	1 x 2	80	23	ADD ADD Product added
Material TeO2 Polarisation Linear Diffraction Efficiency 85 Associated RF driver MODAxx PDF Datasheet
	MT80-A1.5-VIS	450-700	1 ⋅ 5 x 2	80	50	ADD ADD Product added
Material TeO2 Polarisation Linear Diffraction Efficiency 85 Associated RF driver MODAxx PDF Datasheet
	MT110-A1-VIS	450-700	1 x 2	110	15	ADD ADD Product added
Material TeO2 Polarisation Linear Diffraction Efficiency 85 Associated RF driver MODAxx PDF Datasheet
	MT110-A1.5-VIS	450-700	1 ⋅ 5 x 2	110	50	ADD ADD Product added
Material TeO2 Polarisation Linear Diffraction Efficiency 85 Associated RF driver MODAxx PDF Datasheet
	MT200-A0.5-VIS	450-700	0 ⋅ 5 x 2	200	8	ADD ADD Product added
Material TeO2 Polarisation Linear Diffraction Efficiency 85 Associated RF driver MODAxx PDF Datasheet
	MT250-A0.5-VIS	450-700	0 ⋅ 5 x 2	250	30	ADD ADD Product added
Material TeO2 Polarisation Linear Diffraction Efficiency 85 Associated RF driver MODAxx PDF Datasheet
	MCQ110-A2-VIS	458-650	2 x 2	110	50	ADD ADD Product added
Material Quartz Polarisation Linear Diffraction Efficiency 85 Associated RF driver MODAxx PDF Datasheet
	MT350-A0.12-VIS	450-700	0 ⋅ 12 x 1	350	6	ADD ADD Product added
Material TeO2 Polarisation Linear Diffraction Efficiency 80 Associated RF driver MODAxx PDF Datasheet
	MQ110-A3-UV	325-425	3 x 3	110	50	ADD ADD Product added
Material Fused silica Polarisation Linear Diffraction Efficiency 90 Associated RF driver MODAxx PDF Datasheet
	MQ180-A0,25-VIS	440-650	0 ⋅ 25 x 1	180	10	ADD ADD Product added
Material Fused silica Polarisation Linear Diffraction Efficiency 70 Associated RF driver MODAxx PDF Datasheet
	MQ240-A0,2-UV	325-425	0 ⋅ 2 x 1	240	10	ADD ADD Product added
Material Fused silica Polarisation Linear Diffraction Efficiency 70 Associated RF driver MODAxx PDF Datasheet
	MQ180-A0,2-266.300	266-300	0 ⋅ 2 x 1	180	10	ADD ADD Product added
Material Fused silica Polarisation Linear Diffraction Efficiency 85 Associated RF driver MODAxx PDF
	MQ180-A0,2-UV	325-425	0 ⋅ 2 x 1	180	10	ADD ADD Product added
Material Fused silica Polarisation Linear Diffraction Efficiency 80 Associated RF driver MODAxx PDF Datasheet
	MQ200-A1,5-244.266-Br	244-266	1 ⋅ 5 x 2	200	60	ADD ADD Product added
Material Fused silica Polarisation Linear Diffraction Efficiency 85 Associated RF driver MODAxx PDF Datasheet
	MQ200-A1,5-266.300-Br	266-300	1 ⋅ 5 x 2	200	60	ADD ADD Product added
Material Fused silica Polarisation Linear Diffraction Efficiency 85 Associated RF driver MODAxx PDF Datasheet