Acousto-Optic Modulators

Fused; Fiber Type DC (Nufern SM-9/105/125), MM (Nufern 105/125, 250), SM (SMF-28); 1250-1700 nm; Number of Legs 1x2, 2x2; SM IL ≤0.5-≤3.7 dB; Dimensions Ø2.9x50.8 mm Gooch & Housego’s (G&H) 18-X series of fused dual-clad fiber (FDCF) couplers and optical splitters offers a high coupling efficiency for multi mode (MM) fiber over a broad wavelength range with a low wavelength dependent loss. Light launched in the single mode core of the input single mode (SM) fiber or dual-clad (DC) fiber will transmit 100% through G&H’s 18-XXXXX-XX-XXXXX series FDCF coupler directly to the inner core of the output DC fiber, while light launched in the inner cladding of the DC fiber will couple to the multi mode (MM) fiber with at least 50% coupling efficiency depending on the core size of the MM fiber as a bigger MM fiber (i.e. 250 µm core) results in a higher coupling transmission percentage (70% or higher) to the MM fiber. As different DC fibers have different operating wavelength ranges, proper choice of SM fiber is very important for building a high-performance FDCF coupler. The typical 2x2 FDCF couplers have DC fiber in two opposite leads and MM fiber in the other two arms. The DC input fiber can be optionally replaced with a matching SM fiber and the MM output fiber can be terminated to form a 2x1 FDCF coupler. Key Features: Broad Wavelength Range: 1250 to 1700 nm 100% Transmission for single mode (SM) Fiber Input High Coupling Efficiency to Multi Mode (MM) Fiber Low Wavelength Dependent Loss Fiber Type: Double Clad (DC, Nufern SM-9/105/125 µm), Multi Mode (MM, Nufern 105/125 µm, Nufern 250 µm), Single Mode (SM, SMF-28) Number of Legs: 1x2, 2x2 Single Mode (SM) Insertion Loss (IL) for Port 1 -> Port 3 (Core): ≤0.5 dB Single Mode (SM) Insertion Loss (IL) for Port 1 -> Port 2 (Core): ≤2.5, ≤3.7 dB Dimensions: Ø2.9 x 50.8 mm Applications: Instrumentation; OCT Systems; Gyroscopes; Test and Measurement; Sensors

Fused, Visible Wavelength RGB; Fiber Type Panda PM; 400-680 nm; Number of Legs 1x2, 2x2; Splitting Ratio 50/50 to 1/99; IL 0.6-25 dB; Dimensions Ø2.9x40-Ø5.5x34 mm Gooch & Housego’s fused pure silica (52-X67 - XX-XX-XXX0 X) or visible wavelength RGB (52-X65 XX-XX-XXXXX), fiber-based, polarization maintaining (PM), 1x2 and 2x2 fiber optic couplers, taps and optical signal splitters offer high extinction ratio (ER) with polarization launch into a single or dual axis (slow axis and fast axis). Gooch & Housego (G&H) utilizes a proprietary, proven fused biconical taper (FBT) process to manufacture high-grade PM couplers, offering high extinction ratio with minimum optical loss. G&H selects PM fiber from different suppliers to accommodate your application-specific operating wavelengths. These high-quality PM couplers are manufactured mainly using panda fiber which guarantees a high polarization extinction ratio (PER). Operating wavelengths range from 400 nm to 680 nm, and coupling ratio offerings range from 50/50, 20/80, 10/90, 5/95 and 1/99 etc. Other coupling ratio options are available upon request. 52-X6X PM fiber couplers are available in several mechanical package options with multiple connector options like FC/PC, FC/APC etc. Key Features: Operating Wavelength Range: 400 to 680 nm High Polarization Extinction Ratio (PER): ≥18, ≥20 dB Polarization Launch into a Single or Dual Axis (Slow and Fast) Coupling Ratio: 50/50, 20/80, 10/90, 5/95, 1/99, Other Ratio Options on Request Number of Legs: 1x2, 2x2 Low Excess Optical Loss: <0.5 to <1.2 dB Insertion Loss (IL): 0.6 to 25 dB Very Low Polarization Dependent Loss (PDL) Low Back-reflection – Return Loss (RL): ≥30 dB High Isolation High Reliability Power Handling: ≤500 mW Small Size: Ø2.9 x 40 to Ø5.5 x 34 mm Made Using Gooch & Housego’s Proven High-reliability FBT Process Applications: Aerospace; Telecom; Sensors; WDM Systems; Defense; Gyroscopes; Medical

Fused, Broadband; Fiber Type Panda PM, Bow-tie; 800-960 nm; Number of Legs 1x2, 2x2; Excess Loss <0.5 dB; PER ≥18, ≥20 dB; Dimensions Ø2.9x40, Ø3.9x50.8 mm Gooch & Housego’s 53-X89 series of broadband, fused, polarization maintaining (PM) fiber optic couplers, taps and optical signal splitters offer high extinction ratio (ER) with polarization launch into a single or dual axis (slow axis and fast axis). Gooch & Housego (G&H) utilizes a proprietary, proven fused biconical taper (FBT) process to manufacture high grade PM couplers including single wavelength and wavelength flattened (broadband/wideband). G&H’s fused PM fiber couplers/splitters offer high ER with minimum optical loss. Gooch & Housego selects PM fibers such as Panda and bow-tie from different suppliers to accommodate your application-specific operating wavelengths. Fused PM couplers usually operate over a certain wavelength band of ±20 nm. G&H’s latest innovative FBT wavelength flattening technology has expanded the operating wavelength band up to 50 nm, with performance comparable to G&H’s single mode (SM) WFCs (wavelength flattened couplers). G&H’s 53-X89 XX-XX-XXXXX fused broadband PM couplers are small in size and exhibit a flat coupling ratio response over a broadband of wavelength ranges. Splitters are available in a variety of coupling/splitting ratios. Key Features: Ultra-broad Bandwidth Operating Wavelength Range: 800 to 960 nm High Polarization Extinction Ratio (PER): ≥18, ≥20 dB Polarization Launch into a Single or Dual Axis (Slow and Fast) Number of Legs: 1x2, 2x2 Low Excess Optical Loss: <0.5 dB Without Connectors Excellent Uniformity Low Wavelength Dependent Loss High Directivity Dimensions: Ø2.9 x 40, Ø3.9 x 50.8 mm Applications: Instrumentation; OCT Systems; Gyroscopes; Test and Measurement; Sensors

Wavelength 266-1100 nm; Type IR, Visible, UV, Mid-IR; Scan Angle 4,9-60 mrad; Active Aperture 1.0-60 mm; Operating Frequency 9.4 µm-432 MHz; Optical Material Germanium, Sapphire, Fused Silica, Crystalline Quartz, Tellurium Dioxide G&H acousto-optic deflectors (AODF) provide precise spatial control of an optical beam, whether performing 1D or 2D scanning or executing beam deflection through a fixed angle. The acousto-optic deflectors offer highly uniform diffraction efficiency across the full scan angle, with consistent power throughput for scanning applications like material processing and digital imaging. Gooch & Housego offers a wide range of standard deflectors and RF drivers for wavelengths from 266-1500 nm. Key Features: Visible and NIR wavelength products based on tellurium dioxide crystals, grown in-house UV wavelength products based on fused silica and crystal quartz Broad bandwidth products based on a longitudinal mode approach using a phased array of piezoelectric elements High efficiency products based on slow shear deflection using parallel tangents off-axis interactions Selecting the right RF driver is important to achieve the desired scanning speed and accuracy. Deflectors used in scanning or writing applications require a variable frequency source which is both stable and highly linear. 2D UV beam scanning may be achieved by cascading two UV deflectors in series. Gooch & Housego’s flexible functionality AODF Dual Driver with phase synchronized outputs offers the optimum in RF driver control for 2D scanning.Applications: Digital Imaging; Heterodyne Interferometry; Laser Cooling; Laser Marking; Laser Tweezers; Material Processing; Micromachining; Microscopy; On-Line Process Control; Optical Inspection; Photolithography; Printing Series Wavelength Type Scan Angle Active Aperture Operating Frequency Optical Material Downloads AODF 4070 N/A Mid-IR 60 mrad 9 mm 9.4 µm Germanium Datasheet Driver Driver AODF 2690-UV 266 - 355 nm N/A up to 4.9 mrad up to 7 mm 100 - 432 MHz Sapphire Datasheet Driver Driver AODF 4200-UV 266 nm UV 5.5 mrad 1.0 x 60.0 mm 135 - 265 MHz Fused Silica Datasheet Driver Driver AODF 4170 355 nm UV 4.9 mrad 7 mm 130 - 210 MHz Crystalline Quartz Datasheet Driver Driver AODF 4100-UV 364 nm UV 29.5 mrad 4.0 x 14.0 mm 75 - 125 MHz Tellurium Dioxide Datasheet Driver Driver AODF 4200-VI 405 - 488 nm Visible 58 mrad 4.8 mm 150 - 250 MHz Tellurium Dioxide Datasheet Driver Driver AODF 4090-7 440 - 530 nm Visible 44 mrad 8.5 mm 60 - 115 MHz Tellurium Dioxide Datasheet Driver Driver AODF 4100-VI 488 nm Visible 39.5 mrad 4.0 - 14 mm 75 - 125 MHz Tellurium Dioxide Datasheet Driver Driver AODF 4055-4 780 - 980 nm IR 44.3 mrad 3.5 x 14 mm 35 - 70 MHz Tellurium Dioxide Datasheet Driver Driver AODF 4210-IR 830 nm IR 27.6 mrad 2.0 - 6.0 mm 140 - 280 MHz Tellurium Dioxide Datasheet Driver Driver AODF 4090-6 1064 nm IR 56 mrad 2 mm 72.5 - 107.5 MHz Tellurium Dioxide Datasheet Driver   AODF 4075-IR 1065 - 1100 nm IR 8.1 mrad 2.5 mm 59 - 91 MHz Tellurium Dioxide Datasheet Driver Driver

Wavelength 415-1550 nm; Type Visible, IR; Operating Frequency 40-200 MHz; Active Aperture 1.5-6 mm; Optical Material Tellurium Dioxide Transmission through an acousto-optic (AO) device causes the input light to experience a frequency shift equal to the RF drive frequency. The acousto-optic frequency shifters (AOFS) from Gooch & Housego (G&H) are optimized for the needs of applications like interferometry, with the ability to achieve high extinction ratio between modes.The product line includes standard products with frequency shifts of over 300 MHz and integrated low-power AOFS modules in which the RF driver has been built into the housing. Frequency shifters for specific application, including frequency shifts up to 600 MHz, can be customized on request. The frequency shifters are manufactured using high quality tellurium dioxide (TeO2), grown and polished in-house, for lowest insertion loss and excellent power handling. Standard AOFS products are offered for wavelengths in the visible and NIR for use with fundamental and doubled Argon Ion, Nd:YAG, He:Ne, diode, dye, and Ti:Sapphire lasers. With standard frequency shifts of over 300 MHz and custom frequency shifts up to 600 MHz, as well as models for double-pass configurations, the frequency shifters match most research and industrial needs. Frequency shifters are highly efficient acousto-optic devices, requiring very low drive power to achieve the desired frequency shift. G&H’s AOFS designs typically use the slow shear mode, resulting in slow rise time, but requiring minimal power consumption (typically < 100 mW power draw). This allows to often package the driver with the AOFS for a compact and power-efficient solution. Applications: Interferometry; Laser Cooling; Laser Doppler Velocimetry; Laser Doppler Vibrometry (LDV); Optical Heterodyne Detection Series Wavelength Type Operating Frequency Active Aperture Optical Material Downloads AOMO 3080-125 415 - 900 nm Visible 80 MHz 2 mm Tellurium Dioxide Datasheet Driver Driver AOMO 3100-125 440 - 850 nm Visible 100 MHz 1.5 mm Tellurium Dioxide Datasheet Driver Driver AOMO 3200-125 470 - 690 nm Visible 200 MHz 1.5 mm Tellurium Dioxide Datasheet Driver Driver I-FS040-1.5S2C-3-GH83 532 nm Visible 40 MHz 1.5 mm Tellurium Dioxide Datasheet Driver   I-FS040-1.5S2C-1-GH66 532 nm Visible 40 MHz 1.5 mm Tellurium Dioxide Datasheet     I-FS040-2S2E-1-GH66 630 - 690 nm Visible 40 MHz 2 mm Tellurium Dioxide Datasheet     AOFS I-FS040-2S2E-3-OL3 630 - 690 nm Visible 40 MHz 2 mm Tellurium Dioxide Datasheet Driver   I-FS080-3S2E-3-LG5 632.8 nm Visible 80 MHz 3 mm Tellurium Dioxide Datasheet Driver   AOFS 4040-191 633 - 1064 nm IR 40 MHz 2 x 6 mm Tellurium Dioxide Datasheet Driver   I-FS040-2S2J-3-GH53 1550 nm IR 40 MHz 2 x 4 mm Tellurium Dioxide Datasheet Driver  

Type IR; Wavelength 700-1100 nm; Operating Frequency 38-80 MHz; Active Aperture 2-3 mm; Window Type Brewster, AR coated; Optical Material Fused Silica; Acousto-optic mode lockers (AOML) modulate the loss within a laser cavity at its resonant frequency, effectively “locking” the phase of the longitudinal modes to generate very narrow laser pulses of high intensity. Gooch & Housego’s mode lockers for Nd:YAG, Nd:YLF, Ti:Sapphire and Argon Ion lasers can modulate at up to 200 MHz, yielding near-theoretical mode locked laser pulse widths. Antireflection (AR) coated and Brewster angle options are available. Customized one-off mode lockers can be designed for demanding scientific and OEM applications.The acousto-optic mode lockers from Gooch & Housego are manufactured using high quality fused silica, polished and fabricated in-house to ensure high quality and reliability. >99% transmission at 1064 nm is achieved by using a durable in-house antireflection V-coat. Low scatter and tight quality controls ensure that every mode locker is capable of handling high peak laser power over the long term without damage. The standard mode lockers include operating frequencies from 38 MHz to 80 MHz. The more modes are locked together in phase, the shorter the pulse. G&H’s standing wave mode lockers can obtain near theoretical mode locked laser pulse widths, with industry-leading transmission performance. The high-Q mode lockers can be used for Nd:YAG, Nd:YLF, Ti:Sapphire and Argon ion lasers at near infrared wavelengths to achieve picosecond and femtosecond length pulses at repetition rates of up to 200 MHz. The short pulses generated are often used in applications like nonlinear optics, optical data storage, femtosecond micromachining and multiphoton microscopy. High repetition rates are often desired for scientific applications, including those using optical heterodyne detection for spectroscopy, LIDAR or telecommunications. RF driver selection impacts mode locking system performance. Active temperature control of the acoustic resonator can assist in controlling resonant frequency such that resonance at the precise frequency of the driver's oscillator can be maintained. We can assist choosing the right driver for your application. Contact our sales team to identify the best RF driver for your specific application.Applications: Femtosecond Micromachining; fs/ps Lasers (Nd:YAG, Nd:YLF, Ti:Sapphire, Argon Ion); LIDAR; Multiphoton Microscopy; Nonlinear Optics; Optical Data Storage; Optical Heterodyne Detection For Spectroscopy; Telecommunications Series Type Wavelength Operating Frequency Active Aperture Window Type Optical Material Downloads 12041-3-BR-TE AOML IR 700 - 1100 nm 41 MHz 2 mm Brewster Fused Silica Datasheet 12080-3-TE AOML IR 1064 nm 80 MHz 3 mm AR coated Fused Silica Datasheet 12038-3-TE AOML IR 1064 nm 38 MHz 3 mm AR coated Fused Silica Datasheet 12041-3-TE AOML IR 1064 nm 41 MHz 3 mm AR coated Fused Silica Datasheet 12050-3-TE AOML IR 1064 nm 50 MHz 3 mm AR coated Fused Silica Datasheet 12038-3-BR-TE AOML IR 700 - 1100 nm 38 MHz 2 mm Brewster Fused Silica Datasheet 12050-3-BR-TE AOML IR 700 - 1100 nm 50 MHz 2 mm Brewster Fused Silica Datasheet 12080-3-BR-TE AOML IR 700 - 1100 nm 80 MHz 2 mm Brewster Fused Silica Datasheet

Wavelength 5.5 µm-1090 nm; Rise / Fall Time 10-160 ns/mm; Active Aperture 0.1-9.6 mm; Operating Frequency 40-200 MHz; Optical Material Crystalline Quartz, Germanium, Tellurium Dioxide; Type IR, Mid-IR, Visible, UVAcousto-optic modulators (AOM) allow the intensity of light to be controlled and modulated at rates that far exceed mechanical shutters, even up to 70 MHz. The AO modulators available from Gooch & Housego (G&H) are optimized for low scatter and high laser damage threshold. Rise time, modulation rate, beam diameter and power handling requirements of the application need to be understood in order to identify the best acousto-optic modulator and RF driver solution.An acousto-optic modulator (AOM) uses sound waves within a crystal to create a diffraction grating. As the power of the applied RF signal is varied, the amount of diffracted light varies proportionally. Modulators 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).Contact our sales team to identify the best RF driver for your specific applicationApplications: Heterodyne Interferometry; Intensity Levelling; Intensity Modulation; Laser Cooling; Laser Doppler Velocimetry; Laser Doppler Vibrometry (LDV); Laser Linewidth Measurements; LIDAR; Marking; Material Processing; Micromachining; Printing; Via Drilling Series Wavelength Rise / Fall Time Active Aperture Operating Frequency Optical Material Type Downloads I-M0XX-XC11B76-P5-GH105 5.5 µm 120 ns/mm up to 9.6 mm 40.68 - 60 MHz Germanium N/A Datasheet Driver   I-M050-10C11V41-P3-GH75 9.4 µm 120 ns/mm up to 9.6 mm 40/60 MHz Germanium Mid-IR Datasheet Driver   I-M041-XXC11XXX-P5-GH77 10.6 µm, 9.4 µm 120 ns/mm up to 9.6 mm 40.68 MHz Germanium Mid-IR Datasheet Driver   AOMO 3200-1220 257 nm 10 ns 0.25 mm 200 MHz Crystalline Quartz UV Datasheet Driver   I-M110-3C10BB-3-GH27 AOM 300 - 400 nm 113 ns/mm 3 mm 110 MHz Crystalline Quartz UV Datasheet Driver   I-M110-2C10B6-3-GH26 AOM 400 - 540 nm 113 ns/mm 2 mm 110 MHz Crystalline Quartz Visible Datasheet Driver   AOMO 3080-125 415 - 900 nm 25 ns 2 mm 80 MHz Tellurium Dioxide Visible Datasheet Driver Driver AOMO 3080-120 440 - 850 nm 34 ns 1 mm 80 MHz Tellurium Dioxide Visible Datasheet Driver   AOMO 3110-120 440 - 850 nm 18 ns 0.6 mm 110 MHz Tellurium Dioxide Visible Datasheet Driver   AOMO 3100-125 440 - 850 nm 160 ns 1.5 mm 100 MHz Tellurium Dioxide Visible Datasheet Driver Driver AOMO 3110-121 442 - 488 nm 18 ns 0.6 mm 110 MHz Tellurium Dioxide Visible Datasheet Driver   AOMO 3200-120 442 - 488 nm 13 ns 0.45 mm 200 MHz Tellurium Dioxide Visible Datasheet Driver   AOMO 3200-121 442 - 488 nm 18 ns 0.32 nm 200 MHz Tellurium Dioxide Visible Datasheet Driver   AOMO 3200-125 470 - 690 nm 160 ns 1.5 mm 200 MHz Tellurium Dioxide Visible Datasheet Driver Driver AOMO 3200-124 780 - 850 nm 10 ns 0.32 mm 200 MHz Tellurium Dioxide IR Datasheet Driver   AOMO 3080-122 780 - 850 nm 25 ns 1 mm 80 MHz Tellurium Dioxide IR Datasheet Driver   AOMO 3200-1113 870 - 1250 nm 10 ns 0.1 mm 200 MHz Tellurium Dioxide IR Datasheet Driver   I-M041-2.5C10G-4-GH50 AOM 1030 - 1064 nm 113 ns/mm 2.5 mm 40.68 MHz Crystalline Quartz IR Datasheet Driver   I-M080-2C10G-4-AM3 AOM 1030 - 1064 nm 113 ns/mm 2 mm 80 MHz Crystalline Quartz IR Datasheet Driver   AOMO 3110-197 1030 - 1090 nm 18 ns 1.25 mm 110 MHz Tellurium Dioxide IR Datasheet Driver