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
	MQ200-A1-266.300-Br	266-300	1 x 2	200	30	ADD ADD Product added
Material Fused silica Polarisation Linear Diffraction Efficiency 85 Associated RF driver MODAxx PDF
	MQ200-A1-244.266-Br	244-266	1 x 2	200	30	ADD ADD Product added
Material Fused silica Polarisation Linear Diffraction Efficiency 85 Associated RF driver MODAxx PDF
	MT250-A0.2-VIS	450-700	0.2 x 1	250	8	ADD ADD Product added
Material TeO2 Polarisation Linear Diffraction Efficiency 85 Associated RF driver MODAxx PDF Datasheet
	MT250-A0.12-800	700-950	0.12 x 1	250	6	ADD ADD Product added
Material TeO2 Polarisation Linear Diffraction Efficiency 80 Associated RF driver MODAxx PDF Datasheet
	MT250-A0.12-1030.1064	1030-1064	0.12 x 1	250	6	ADD ADD Product added
Material TeO2 Polarisation Linear Diffraction Efficiency 80 Associated RF driver MODAxx PDF
	MT110-A1-VIS-M014	450-700	1 x 2	110	15	ADD ADD Product added
Material TeO2 Polarisation Linear Diffraction Efficiency 85 Associated RF driver MODAxx PDF Datasheet
	MT80-A0,4-2000	1900-2100	0.4 x 1	80	25	ADD ADD Product added
Material TeO2 Polarisation Linear Diffraction Efficiency 65 Associated RF driver MODAxx PDF Datasheet
	MT80-A0,7-1300.1600	1300-1600	0.7 x 3	80	80	ADD ADD Product added
Material TeO2 Polarisation Linear Diffraction Efficiency 65 Associated RF driver MODAxx PDF Datasheet
	MGAS110-A1	1300-1600	1 x 2	110	25	ADD ADD Product added
Material Dopped Glass Polarisation Random Diffraction Efficiency 85 Associated RF driver MODAxx PDF Datasheet
	MGAS80-A1	1300-1600	1 x 2	80	50	ADD ADD Product added
Material Dopped Glass Polarisation Random Diffraction Efficiency 85 Associated RF driver MODAxx PDF Datasheet
	MCQ80-A2-L1064-Z32-Cxxx	1030-1080	2 x 2	80	80	ADD ADD Product added
Material Quartz Polarisation Linear Diffraction Efficiency 85 Associated RF driver MODAxx PDF Datasheet
	MGAS40-A1	1300-1600	1 x 2	40	50	ADD ADD Product added
Material Dopped Glass Polarisation Random Diffraction Efficiency 85 Associated RF driver MODAxx PDF Datasheet
	MCQ40-A1.5-L1064-Z32-Cxxx	1030-1080	1.5 x 1.5	40	80	ADD ADD Product added
Material Quartz Polarisation Linear Diffraction Efficiency 85 Associated RF driver MODAxx PDF Datasheet
	MQ40-A3-L1064-W	1030-1080	3 x 3	40	120	ADD ADD Product added
Material SiO2 Polarisation Linear Diffraction Efficiency 85 Associated RF driver MODAxx PDF
	MQ80-A0.7-L1030.1064-Z20	1030-1080	0.7 x 1	80	120	ADD ADD Product added
Material SiO2 Polarisation Linear Diffraction Efficiency 85 Associated RF driver MODAxx PDF
	MT80-A1-1064	980-1100	1 x 2	80	23	ADD ADD Product added
Material TeO2 Polarisation Linear Diffraction Efficiency 85 Associated RF driver MODAxx PDF Datasheet