GOOCH & HOUSEGO

Acousto-optic deflectors provide precise spatial beam steering at frequencies well above 250 MHz with standard reflectors in the 266-1500 nm wavelength range.

AO deflectors deflect the beam at a fixed angle, provide high uniform diffraction efficiency across the scan angle with constant power for scanning applications such as materials processing and digital imaging.

Two-dimensional scanning of the UV beam can be achieved by cascading two UV deflectors in series. The dual AODF driver with flexible functionality and phase synchronized outputs provides optimal RF driver control for 2D scanning.

Modulators allow you to adjust the intensity of light at a rate
at a speed that far exceeds the capabilities
mechanical gates.

To determine the best acousto-optic modulator and RF driver, parameters such as rise time, modulation rate, beam diameter, and optical power must be considered. The fast performance is described by the rise time, which determines the speed of the modulator response to the RF driver and limits the modulation rate.

Modulators fall into two general categories based on their speed of operation. Fast modulators can provide modulation rates up to 200 MHz, and the rise time can be as low as 4 ns. Low-frequency modulators can accept higher power input beams. The rise time of such modulators is usually specified relative to the input beam diameter in ns/mm.

When high repetition rates or large aperture sizes are required, GOOCH & HOUSEGO acousto-optic modulators are optimized for low scattering and high laser damage threshold, ensuring reliable operation in a wide range of applications.

Fiber-coupled acousto-optic modulators provide an elegant and reliable solution for amplitude modulation of fiber lasers to control the timing, intensity, and shape of laser light.

Fiber-coupled modulators are part of the Fiber-Q series, providing high extinction ratio, low insertion loss and excellent stability in polarization-maintained (PM) and non-maintained modes at modulation frequencies up to 80 MHz for visible and infrared wavelengths.

As a consequence of the acousto-optic effect, the radiation also experiences frequency shift and beam deflection. This allows Fiber-Q devices to be used not only for modulation but also for optical heterodyne interferometry applications. The rugged and sealed low-profile housing is ideal for integration into fiber optic and OEM systems, including medical laser systems.

Acousto-optic multichannel modulators allow multiple beams to be modulated or deflected independently of each other by integrating an array of transducers with a single acousto-optic crystal.

Allow up to 48 channels for modulation and up to 8 channels for beam deflection simultaneously. Crosstalk is minimized through proprietary optical and electrical design. Multichannel modulators are characterized by reliability and high performance.

High laser damage threshold is achieved through the use of low scattering materials that have passed stringent quality control. G&H's proprietary production of tellurium oxide and the use of high quality fused silica and crystalline quartz are utilized to ensure low insertion loss and superior optical power.

They are used in laser resonators to generate high intensity pulsed radiation by actively controlling the goodness of the resonator.

Q-switches have low input loss and are capable of very high peak power operation because the design takes into account resonator length, repetition rate, wavelength, beam diameter, polarization state and laser output power to achieve the best possible result.

Ideal for laser development for material processing, engraving, cutting or to create a complete system for lithography or rapid prototyping.

Used to quickly and dynamically select a specific wavelength from a broadband or multichannel laser source.

The tunable filter line includes application-specific solutions for illumination or excitation wavelength selection, as well as for multispectral or hyperspectral imaging.

For best performance, a matched RF driver is recommended, incorporating the latest digital frequency synthesizer (DFS) driver technology and random access wavelength control. Designed to operate in the ultraviolet to mid-infrared wavelength regions with a resolution of less than 1 nm.

They regulate losses in the laser resonator at its resonant frequency, effectively “locking” the phase of longitudinal modes to generate very narrow laser pulses of high intensity.

Manufactured from high quality fused quartz, polished in-house to ensure high quality and reliability. Transmittance >99% at 1064 nm is achieved by using a durable anti-reflective V-coating.

Brewster angle windows are recommended to obtain transmittance over a wider wavelength range (700-1100 nm). Low scattering and stringent quality control ensure that each device can withstand high peak laser power for extended periods of time without damage.

High-speed acousto-optic modulating devices that allow a single laser pulse in a pulse sequence to be separated and redirected to a new optical path.

Acousto-optic pulse sensors are designed to maximize diffraction efficiency and minimize rise/fall time, which reaches up to 4 ns in low duty cycle operation.

High manufacturing standards and strict adherence to AO material quality reduce scattering and provide industry-leading optical power.

The generated RF signal is used to generate an acoustic wave in the acousto-optic device crystal.

A wide selection of stable high-frequency RF drivers with analog and digital modulation capabilities optimized for specific applications. Additional application-specific features may include first pulse suppression, synchronization, pulse shaping, or multi-channel operation.

An analog modulation voltage controls the output power from 0 to 100% of the set maximum power. The digital modulation control signal can turn the RF power on and off.

Pockels cells are used in a variety of laser modulation applications, providing fast and dynamic polarization control, gain switching, light intensity control, intensity modulation, dynamic waveplates, dynamic light coupling in optical systems, and light switching.

They are used in a variety of applications in wavelength range applications from UV to IR (200 nm-12 µm), including CO2 lasers, regenerative amplifiers, laser synthesis systems, optical switches, light intensity modulators, material processing such as labeling, metal annealing, and micromachining.

Utilizing proprietary crystal growth, fabrication and polishing technologies, the company manufactures Pockels cells with longitudinal and transverse electrode configurations from BBO, CdTe, KDP and KD*P/DKDP of the highest quality (99%).

Provide Pockels cells with the high voltage required for their operation. High quality components integrated into the design ensure maximum life, safety and reliability of the devices.

Drivers fall into two categories: Q-switched drivers and regenerative amplifier drivers. Q-switched drivers provide high rise time and longer fall time, while regenerative amplifier drivers have a square pulse with fast rise and fall times, adjustable pulse width, and can operate at frequencies up to 100 kHz or more.

Drivers are customized for specific applications from cable and signal interfaces to cooling system technology. Options include non-standard triggering logic and non-standard interfaces for remote control and monitoring.

Proprietary growth and polishing of high quality lithium niobate crystals and Q-switches developed from them provide high extinction coefficient, high transmittance, low switching voltage and temperature stability over a wide range.

They are used in both military and commercial applications, including rangefinding and ophthalmic surgery. Crystals have low loss, high contrast ratio, low wavefront distortion and are certified for use at 300 MW/cm2.

High efficiency AR coatings are applied to each facet (>99.8% transmittance at each facet), reducing unwanted reflections and maximizing transmission power. The light-induced damage threshold (LIDT) of the standard coatings exceeds 300 MW/cm².

The line of multimode combiners for pumping high-power fiber lasers is based on the technology of precise combining of multimode fibers.

For pumping complex fiber amplifier designs, a through-fiber in the center of the multimode fiber bundle is used, which is single-mode and maintains polarization.

In-house production of Nx1 multimode combiners as well as N+1x1 combiners with through-fiber. Standard components are 3x1, 7x1, 2+1x1 and 6+1x1. All variants can be supplied with custom pump, signal and output fibers.

Manufactured with polarization maintenance and coupling coefficients from 1%
to 50%. Based on highly advanced fused fiber technology, PM fiber couplers feature very low loss and high power.

The center operating wavelength can be selected based on the specific application, including 780, 820, 980, 1064, 1310, 14xx, 15xx and 16xx nm.

PM fiber couplers operate over a temperature range of -55°C to +85°C, making them suitable for use in harsh environments.

Provide superior reliability, excellent performance and meet the technical requirements of a wide range of applications at value for money and are used for combining or splitting optical power in fiber optic networks and systems.

G&H manufactures the light guide components in-house using the ion exchange process. Thanks to G&H's patented process, G&H beam splitters have low insertion loss and ultra-low polarization-dependent loss (PDL).

They operate at wavelengths of 1060, 1310 or 1550 nm and combine the input signal with a reference (local oscillator), thereby shifting all phase and amplitude fluctuations of the optical carrier to a carrier with electronic frequency.

The S- and P-state polarization of the signal is analyzed using a pair of balanced detectors. Housed in a compact hermetically sealed enclosure with direct electrical connection to four photodiodes.

The sample and reference signals are first separated by a non-polarizing beamsplitter, and then polarization state separation is performed by a polarizing beamsplitter. As a result, four channels (S+, S-, P+, and P-) provide detection of different polarization states with exclusion of a common mode.

G&H is a trusted supplier of fused glass components to most leading telecommunications equipment manufacturers. HI REL's component manufacturing expertise is based on a long history of producing very reliable components for terrestrial systems in high volumes.

Advanced fiber processing, in-process inspection and customer-specific testing are used to improve component reliability. Ultra-low loss fused glass components provide low noise and improved safety margins in submarine transmission systems.

A wide range of single-mode fused glass (SM) connectors for visible and near-infrared wavelengths. The fused glass components have low insertion loss and high extinction coefficient and are manufactured to stringent quality and reliability standards.

Single-mode couplers are used for precise control and separation of optical signals in the 1% to 50% range. The SM line of couplers, based on fused glass technology, is characterized by very low loss and high power.

Radiation does not extend beyond the fiber, allowing for a system without alignment and unwanted reflections. The output fiber pigtails can be directly integrated into beam transmission systems.

Cubic beamsplitters can separate the incident beam by polarization (S or P) or by power. The S- and P-polarization components are separated by reflecting the S component off the dielectric coating of the beam splitter while the P component passes through the cube.

Alignment markers on the cubes ensure that they are correctly positioned in the optical path. Cubic beamsplitters are easy to install and are mechanically robust and can be highly durable. Some applications require higher power and lighter weight.

Plates are preferred for high laser energy applications and where there are cost or assembly weight constraints. They are typically designed for 45° operation, although other angles can often be specified.

Consisting of three reflective facets that return incident radiation in the opposite direction and are used to reduce weight and improve system performance.

High precision reflectors provide excellent parallelism between the input and output beams, eliminate mounting errors and reduce sensitivity to thermal errors.

Angled cubic prisms for imaging systems are used where it is difficult or time-consuming to achieve accurate alignment of the return beam. The monolithic structure of the component eliminates mounting errors that occur with mirrors.

Have a high numerical aperture (NA) for visible and infrared radiation using precision manufacturing tooling made of materials such as zinc selenide, zinc sulfide or germanium.

The optical domes consist of two parallel curved surfaces. This geometry provides protection and isolation of critical sensors and electronics from the environment while minimizing disruption to the optical path.

To ensure field operability, extensive metrology capabilities are utilized to verify each component throughout the manufacturing process. Optical domes are difficult to measure, so the company has developed proprietary techniques to minimize errors due to reflections.

G&H supplies high performance optical windows and planes for a wide range of applications in aerospace, industrial, telecommunications and life sciences.

Optical windows are a critical component in a variety of applications where minimal optical impact is required while maximizing the mechanical separation of two media.

Ideally, the window has minimal impact on the beam transmission properties: it does not reflect, absorb or scatter, does not distort or affect the wavefront, and does not distort or deflect the path.

Are a key optical component for many transmission and imaging systems in aerospace, security, healthcare and life sciences.

The company manufactures lenses for ultraviolet and infrared imaging, focusing, collimation and illumination applications using standard polishing and grinding techniques, as well as single-point diamond turning and magnetorheological machining.

The company polishes spherical, hemispherical and aspherical lenses, and has the unique ability to produce complex lens shapes such as stepped profiles or off-axis shapes.

Custom, highly reflective optical mirrors provide superior performance and benefits in the design and construction of laser resonators from small, lightweight lasers to industrial lasers with high laser damage thresholds.

Precision mirrors are manufactured in a variety of shapes and sizes, including aspherical and off-axis. Conventional optical-grade flat substrates are precision polished, inspected under high pressure and white light interferometry to ensure there are no underlying defects before coating. Thorough cleaning and coating ensures that microscopic particles are not embedded in the coating.

Optical prisms are difficult to manufacture because it is difficult to maintain angular tolerances on each surface as a whole during polishing and coating. This process requires sophisticated tooling that is as difficult to manufacture and maintain as the prism itself.

The company manufactures precision optical prisms for a wide range of applications from high-energy laser resonators to broadband imaging systems.

Wide coating capabilities from broadband, high transmittance anti-reflection coatings to V-coatings for high-energy applications. Provides high performance from UV to IR.

Complete set of ring laser gyroscope components: RLG frame and optical components. The Zerodur frame provides maximum stability over a wide range of operating parameters: temperature, humidity, and environmental composition. The company has 40 years of experience in manufacturing high quality, stable Zerodur frames.

The flat, wedge-shaped and curved mirrors used in the RLG are super-polished with surface roughness above 1 Å RMS with high reflectance, low-loss ion-beam sputter coatings designed for harsh environments.

Synchrotron radiation sources create an extremely high thermal load density on front-end optics, which requires complex cooling and reflection geometries. Monocrystalline silicon, with its high heat capacity, is the preferred material for front-end systems.

At small incident angles, a length-to-width ratio of 4:1 or 20:1 becomes necessary. Conventional polishing techniques can result in rounded corners of rectangular-shaped optical elements, so special fabrication and polishing techniques have been developed to maintain flatness across the entire rectangular surface.

In addition to super polished surfaces, IBS ion beam sputtering coatings are available, which provide very low total absorption and scattering losses and exceptional environmental stability.

The wave plates allow light to pass through and change its polarization state without attenuating, deflecting or shifting the beam. This is achieved by delaying one polarization component relative to its orthogonal component.

Zero-order composite waveplates and achromatic waveplates are often optically treated to reduce reflection losses from surfaces. Special waveplates, such as off-axis or zero-order waveplates, are made to special orders.

Waveplates for IR, higher energies and larger sizes are based on CdS, CdSe, KDP and KD*P and have high threshold laser damage.

The high-performance IR system enables imaging in low visibility environments such as fog, smoke, dust and total darkness. The systems are designed to interface with a wide range of platforms ensuring reliability regardless of the environment.

Continuous Zoom systems come standard with the StingWare controller, which features metric zoom, metric focus and active temperature control. The controller uses integrated hardware on the lens elements to minimize system hysteresis, accurately and repeatedly displaying the exact focal length and distance to the object. This avoids loss of pitch and temperature drift.

The fixed focal length assemblies offered are optimized for light transmission, allowing them to be used in the most sensitive applications such as surveillance systems.

G&H offers the industry's widest array of fixed focal length infrared lenses, covering both single spectrum areas and broadband solutions. Standard products have manual focus adjustment.