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Optical Tunable-Based Transmitter for Multiple High-Frequency Bands

Applications include satellite communications, optical communications networks, and RF antenna applications. The purpose of this innovation is to be able to deliver, individually or simultaneously, multiple microwave high-frequency bands including, but not limited to, L (1.5 GHz), C (7 GHz), X (8.4 GHz), Ku (14.5 GHz), Ka (32 GHz), and Q (38 GHz) frequencies at high data rates and with minimal hardware, particularly for use in satellite-to-satellite communications applications. Additionally, this innovation would be a satellite-based transmitter with a significant reduction in weight, mass, and power when compared to current, conventional technologies.

Posted in: Physical Sciences, Photonics, Briefs

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A High-Repetition-Rate Seeded Optical Fiber Amplifier (SOFiA) for the LIST Mission and Next-Generation Satellite Laser Ranging

A document describes a fiber/solid-state hybrid seeded regenerative amplifier capable of achieving high output energy with tunable pulse widths for satellite laser ranging (SLR) applications. The diode-pumped solid-state (DPSS) regenerative amplifier cavity utilizes a pair of Nd:YAG zigzag slabs oriented orthogonally to one another in order to circularize thermal lensing effects and simplify optical correction schemes. The short-pulsed seed laser is a fiber-coupled 1,064-nm narrow-band (<0.02 nm) diode laser that is intensity modulated by a fiber Mach-Zehnder electro-optic modulator, enabling continuously tunable seed pulse widths in the 0.2-to-2.0-ns range.

Posted in: Photonics, Briefs

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Motorized Zoom Lens

Resolve Optics (Chesham, Bucks, UK) has developed a variant of its Model 207 miniature motorised zoom lens, enabling a manufacturer of remotely operated vehicles (ROV’s) to help improve the deep sea welding capability of their system.

Posted in: Products, Photonics

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Galvanometer-Based Optical Scanner

ScannerMAX (Orlando, FL) recently announced the release of the all new Compact- 506 model optical scanner. The Compact-506 is built upon ScannerMAX’s patented VRAD actuator platform and features a very strong rotor construction and 6mm bearings, allowing it to move small mirrors as well as very large mirrors up to 1-inch in diameter.

Posted in: Products, Photonics

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Handheld Raman Spectrometer

Ocean Optics (Dunedin, FL) has released the IDRaman mini handheld Raman spectrometer, a small, powerful instrument for sample authentication and counterfeit detection, identification and verification. The palm-sized IDRaman delivers fast, accurate Raman analyses ranging from chemical and explosive agent detection in the field to quality assurance and quality control sampling routines in the laboratory.

Posted in: Products, Photonics

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2.8 MP USB 3.0 Scientific Imaging Camera

Point Grey (Richmond, BC) announced a new addition to the Grasshopper3 scientific imaging camera family that features high quality, high resolution CCD sensors with a USB 3.0 interface. The new Grasshopper3 GS3-U3-28S5 camera models are based on color and monochrome versions of the fast and highly sensitive Sony ICX674, a 2/3" CCD featuring 4.54 micron square pixels and capable of sending 1932 x 1452 images at 26 FPS. The ICX674 sensor supports high definition (HD) 1080p30 imaging and uses Sony's EXview HAD CCD II™ technology—a further evolved version of the well-known EXview HAD CCD™ technology—to improve quantum efficiency and increase sensitivity, including into the near infrared. The GS3-U3-28S5 offers quantum efficiency of 67% at 525 nm, a dynamic range of 63 dB, dark current of 1.27 e-/second, and supports long exposures up to 30 seconds.

Posted in: Products, Photonics

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Dual-Band Photodetector

GPD Optoelectronics Corp. (Salem, NH) has announced the availability of made-toorder Dual-Band photodetectors. Two discrete photodiodes are mounted in a stack such that the incoming light is sensed by both diodes. The design can be optimized for detection of light from the visible to mid-IR.

Posted in: Products, Photonics

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