Acousto-Optic Modulators

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Acousto-Optic Modulators

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Product description：

Acousto-optic modulators (AOM) can be used like a shutter (cycling light on and off at a set frequency), or as a variable attenuator (controlling the intensity of transmitted light dynamically). This product only presents 1st order diffracted light under the interaction of Bragg diffraction.

According to the types of structure, CASTECH‘s acousto-optic modulators can be divided into free-space AOM and fiber-coupled AOM.

CASTECH optimizes the design of modulators in accordance with the requested speed, wavelength, beam diameter, contrast ratio to offer the best solution for customers. Combined with our competencies of process technology, we are able to offer AOM with LIDT over 1GW/cm2 and low scatter. The connector of the fiber-coupled AOM fiber tail can be adopted by bare fiber, FC/PC or FC/APC.

Applications：

● Laser marking

● Lithography

● Material processing

● Medical surgery

● Micromachining

Iintroduction：

Free-space
Interaction material	Crystal quartz	TeO2
Wavelength	300 - 400 nm,400 - 540 nm,1030 - 1064 nm or other	1064 nm
Damage threshold	＞1 GW/cm²	＞1GW/cm²
AR coating reflection	＜0.2% per surface	＜0.2% per surface
Transmission（Single pass）	≥99.6%	≥97.0%
RF frequency	40 MHz/80 MHz/100 MHz or other	200,250 MHz
Polarization	Linear, vertical to base	Random
Aperture	2-3.0 mm or other	0.18 mm
Acoustic mode	Compressional	Compressional
Rise time	113 ns/mm	＜120 ns/mm
Diffraction efficiency	≥ 85 % or other	≥70 %
RF power	5,10,25 W or other	2.5 W
RF connector	SMA-F or other	SMA
RF line length	200 mm or other	\
Cooling	Conduction-cooled	Conduction-cooled
Shell material	Aluminum alloy 6061	Aluminum alloy 6061
Storage temperature	-20~70 ℃	-20℃~70℃

Fiber-coupled
Interaction material	TeO2
Wavelength	1030-1080 nm or other
RF frequency	100/120/200MHz or other
Insertion loss	≤1.5dB or other
Extinction ratio	≥45 dB or other
Rise time	＜50 ns
Optical power Handling（MAX）	3 W or other
RF power	2 ,2.5W or other
RF connector	SMA-F
Fiber type	10/125 SC ,PM980 or other
Fiber length	1 m or other
Fiber termination	Bare fiber or FC/APC
VSWR	≤1.2
Cooling	Conduction-cooled
Shell material	Aluminum alloy 6061
Storage temperature	-20~70 ℃

CAOM-f-a-mt -w-c-h
RF（f）	Aperture（a）	Material（m）	Mode（t）	Wavelength（w）	Connector（c）	Housing（h）
100	1 mm	Tellurium Dioxide	Compressional	1064 nm	SMA	A66
100	3 mm	Tellurium Dioxide	Compressional	300 - 400 nm	SMA	A05
200 MHz	0.18 mm	Tellurium Dioxide	Compressional	1064 nm	SMA	A29
250 MHz	0.18 mm	Tellurium Dioxide	Compressional	1064 nm	SMA	A29
40.68 MHz	2.5 mm	Crystalline Quartz	Compressional	1030 - 1064 nm	SMA	A03
80 MHz	2 mm	Tellurium Dioxide	Compressional	400 - 540 nm	SMA	A05
80 MHz	2 mm	Crystalline Quartz	Compressional	1030 - 1064 nm	SMA	A03

CAFA-f-r-p-mat-w-c-h
RF（f）	RF Range（r）	Power（p）	Material（m）	Fiber Type（a）	Fiber Terminal（t）	Wavelength（w）	Connector（c）	Housing（h）
100	/	2.5	Tellurium dioxide	HI 1060	Bare fiber	1064\1550	SMA	A87
120	/	2.5	Tellurium dioxide	PM980	FC/PC	1064\1550	SMA	A87
200	/	2.5	Tellurium dioxide	PM10/125		1064\1550	SMA	A50
				SC10/125
				DCG10/125
				GSF10/125
				PM1550XP
				PM1060
				SM28

CAFA-f-r-p-mat-w-c-h
RF（f）	RF Range（r）	Power（p）	Material（m）	Fiber Type（a）	Fiber Terminal（t）	Wavelength（w）	Connector（c）	Housing（h）
100	/	2.5	Tellurium dioxide	HI 1060	Bare fiber	1064\1550	SMA	A87
120	/	2.5	Tellurium dioxide	PM980	FC/PC	1064\1550	SMA	A87
200	/	2.5	Tellurium dioxide	PM10/125		1064\1550	SMA	A50
				SC10/125
				DCG10/125
				GSF10/125
				PM1550XP
				PM1060
				SM28

Product Number**	RF(f)	Aperture(a)	Material(m)	Mode(t)	Wavelength(w)	Connector(c)	Housing(h)
CAOM-f-a-mt -w-c-h	68MHz 80MHz 100 MHz 120 MHz 150 MHz 200 MHz 250 MHz ...	≤3 mm	CQ (Crystalline Quartz) TE (TeO2)	C (Compressional)	355nm 532nm 1064nm ...	SMA SMC …	A03 A04 A13 ...

Product Number**	RF(f)	RF Range (r)	Power (p)	Material(m)	Fiber Type (a)	Fiber Terminal (t)	Wavelength (w)	Connector(c)	Housing (h)
CAFA-f-r-p-mat-w-c-h	100 MHz 120 MHz 150 MHz 200 MHz 250 MHz ...	/	≤2.5 W	TE (TeO2)	1 (HI1060) 2 (PM980) 3 (PM 10/125) ...	B (Bare Fiber) F (FC/PC)	1030nm 1064nm ...	SMA ...	A46 A50 ...