1-cm InGaAs Pin Photodetector

GPD Optoelectronics Corp. (Salem, NH), manufacturers of germanium PN, PIN, APD and InGaAs PIN high-speed, large-area and extended wavelength photodetectors and APDs for near-infrared applications (800-2600 nm) recently announced the availability of 1-cm diameter InGaAs Photodetectors in die form, on ceramic submount or in a TO-9 package. Ge photodetectors are available in diameters up to 13 mm. Custom submounts and packages, including fiber pitgailed and cooled applications, are also available.

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Broadly Tunable Ultrafast Laser

MKS Instruments, Inc. (Andover, MA) introduced its Spectra- ® InSight® X3+, the fourth generation of its broadly tunable ultrafast laser platform. InSight X3+ provides >3W output power at 900 nm, >2.7W at 1000 nm and >2.4W at 1100 nm with ultrashort pulses, exceptional beam quality and integrated dispersion pre-compensation to deliver highest peak powers at the sample.

A second synchronized beam with >3.5W at 1045 nm is available for multimodal and advanced imaging techniques, including second and third-harmonic generation (SHG and THG), dual-wavelength imaging, optogenetics photo-stimulation, coherent anti-Stokes Raman scattering (CARS) and stimulated Raman scattering (SRS) imaging. InSight X3+ is a fully automated system for seamless wavelength tuning to excite a full range of fluorophores from green fluorescent protein (GFP) to newer far red fluorophores at the longest wavelengths.

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Pulse Energy Sensor

Ophir (North Logan, UT) recently introduced its new PE50U-DIFH-C Pulse Energy Sensor, which features special materials that can measure UV radiation down to 193 nm, high repetition rates up to 10 KHz, and high energy densities up to 1J/cm2 at 193 nm and 2J/cm2 above 240 nm.

Suitable for use in medical, semiconductor, and scientific research applications, the PE50U-DIFH-C energy sensor operates over a wide range of wavelengths, power levels, and repetition rates. It is calibrated at 193 nm, 248 nm, 355 nm, 532 nm, 1064 nm, 2100 nm, and 2940 nm to ensure the highest levels of accuracy.

The sensor has a 35 mm aperture and can measure energies from 10μJ to 10J. A special diffuser delivers the highest energy density damage threshold available, up to 90J/cm2 for ms pulses.

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Laser Module for Flash LiDAR Applications

Focuslight Technologies (Xi’an, China) has announced the Focuslight FocusFlux® AL01 Series LiDAR laser module, a high peak power, 1064nm laser module that employs a novel, compact, solid state design. It features a 1.5mJ 3ns laser pulse based on Q-switch technology. Built-in advanced glass diffusers enable it to generate a configurable field of view (FOV) of 125 × 25, 60 × 45, or customized per request. This allows a large FOV to be captured in one frame in a few nanoseconds and an entire 3D point cloud to be output.

The FocusFlux AL01 is engineered for automotive LiDAR and industrial applications. It is designed with special materials and processes to meet automotive grade reliability, production, and quality requirements. It is able to lase under high temperature (+80°C) and low temperature (-40°C), as defined and required by automotive standards.

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Optimized Camera Sensor Lenses

Resolve Optics (Bucks, UK) designs special optimized lenses that exactly match your camera sensor. Industrial camera sensors come in a wide range of sizes from 1⁄4 -inch to 1-inch and beyond. The lens(es) you choose to integrate into your product will play a pivotal role in determining your camera’s performance. A lower resolution lens will reduce the achievable image quality from a high mgapixel camera sensor. Likewise selecting non-optimized lenses may compromise performance due to limiting the field of view (FOV), increase image distortion or vignette light, impacting the camera’s sensor.

For larger format camera sensors (>1.5-inch) few off-the-shelf lenses even exist. Resolve Optics has designed several sensor-matched large format lenses. These specialist lenses for close-up imaging were designed to deliver a large depth of field, low distortion edge to edge, application-specific F-number and exceptional contrast.

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White Light Scanning System

Hexagon’s Manufacturing Intelligence division (North Kingstown, RI) announced the launch of the AICON SmartScan R12, a new 12-megapixel version of their white light scanning system. The quickly and easily changed fields of view (FOVs) of the SmartScan make it suitable for use by third-party metrology contractors whose equipment must meet the challenges of a wide range of varying applications and industries.

As with other scanners in Hexagon’s AICON range, the SmartScan R12 will be compatible with turntable and turn-tilt units that allow for high-productivity semi-automated measurement processes. It is also combinable with AICON DPA Series photogrammetry solutions, allowing for extremely fast and accurate measurement of larger-volume components.

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Laser Sensor

The optoNCDT 2300-2DR laser sensor from Micro-Epsilon America (Raleigh, NC) is suitable for reflective and shiny targets. The sensor is, for example, used in thickness measurements of flat glass, distance measurements on annealed glass and assembly monitoring of extremely small parts. The measuring rate can be set up to 49kHz, which is why the sensor is suitable for process monitoring tasks. While operating with the Advanced Real-Time-Surface-Compensation (ARTSC), the sensor enables a precise real-time surface compensation of different surface types. Data output is via Ethernet, RS422 or EtherCAT. If the sensor is operated with the CSP2008 universal controller, an analog output is available and the measurement values of material thickness and width can be synchronously acquired and evaluated.

The optoNCDT 2300-2DR sensor is based on the principle of optical triangulation. A visible, modulated light spot is projected onto the target surface. The receiving optics produces the direct proportion of the light spot, in dependency of the distance, onto a CCD element with spatial resolution. A digital signal processer in the sensor calculates the distances between the light spot on the target and the sensor from the output signal of the CCD element. The distance value is linearized and output via an analog or digital interface.

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Two Axis Optical Mounts

IVM Series kinematic optical mounts from Siskiyou (Grants Pass, OR) utilize a patented, spring-loaded pivot construction to deliver two axis tilt adjustment with zero crosstalk and a level of long-term mechanical stability (absence of drift) unmatched by any competitive product. These mounts are available for use with 0.5", 1.0", and 2.0" diameter components. Plus, the 1.0", and 2.0" sizes are available in a version having a large cutout in the back plate of the mount to allow for an unobstructed beam path when used with beamsplitters at incidence angles of up to 45°.

IVM Series mounts feature top adjustment which makes them particularly useful in space constrained applications, or where mechanical access to the mount is limited. Total angular adjustment for all these mounts is a generous 8°, with a minimum controllable motion as small as 2.3 arcseconds. All IVM mounts can be supplied with either 100 TPI (thread per inch) hex head screw actuators, or a knob drive for easy manual adjustment. Motorized operation is also supported through compatibility with Siskiyou 500 Series Linear Drive actuators.

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Adjustable Ring Mode (ARM) Fiber Laser

The new Coherent (Santa Clara, CA) Highlight™ FL-ARM with Fiber-Fiber-Switch is a high-power (2 - 8 kW), dual fiber output laser that can sequentially power two separate workstations or processes. Dual fiber output delivers increased throughput in cost sensitive, high-volume welding applications, particularly in automotive manufacturing. Alternately, the second fiber can act as a redundant backup for the first, thus minimizing service downtime when required.

HighLight FL-ARM implements power sharing through the use of Coherent’s proprietary Fiber-Fiber-Switch technology. The process fibers themselves utilize Coherent’s unique Adjustable Ring Mode configuration, comprising a dual core delivery fiber that produces a central spot surrounded by another concentric ring of laser light. The power levels in the center and the ring can be independently adjusted on demand (from 1% to 100%) and switched at a rate 1000 times faster than other products; it can also be independently modulated. This arrangement provides improved control of keyhole and melt pool stability during the welding process.

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Compact DPSS Lasers

Quantum Composers (Bozeman, MT) has announced an addition to their Jewel Laser Series, the MiniJewel Laser. This new compact laser has a small footprint (165 mm × 97 mm × 36 mm), weighs less than 3-lbs, and is easily customizable. The MiniJewel is a pulsed diode pumped solid state Nd:YAG laser that delivers 7.5 mJ of energy at 1064 nm with rep rates as high as 50 Hz. This pulsed, conductively cooled, multimode laser comes with an optional built-in attenuator and simple software to control energy, firing mode, and frequency.

The MiniJewel system has an energy of 4 mJ at its fundamental output of 1064 nm and can be supplemented with optional nonlinear modules for 1064/532 nm, 532/355 nm or 355/266 nm. The laser systems compact size, 140 mm × 87 mm × 233 mm, is ideal for mounting to microscopes. Module options include an X-Y aperture, polarization rotator, camera ports, and a stand-alone smart controller.

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Photonics & Imaging Technology Magazine

This article first appeared in the May, 2020 issue of Photonics & Imaging Technology Magazine.

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