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2021-10-14 from Gentec Electro-Optics:

New integrating sphere detector for fast laser power measurement up to 1 kW

Following its recent launch of integrating sphere laser power detector series, Gentec-EO now adds another model of fast laser power detectors, the IS50A-1KW-RSI.

Probably the most remarkable feature of this detector is its typical rise time of just 0.2 s, which means you get your high-accuracy measurement extremely fast compared to any other high-power detectors available on the market.

With its capability to measure up to 1000 W of continuous power and its 50 mm aperture, the IS50A-1KW-RSI accommodates large and powerful laser beam. It also features an incredibly low noise level of just 0.01 mW.

This power detector is ideal for collimated beams, but will also work perfectly up to 20º divergence (full angle).

Simply plug it into a computer with an INTEGRA USB or RS-232 connector, open our free proprietary software PC-Gentec-EO and you are all set to take your first measurement.

Why use Gentec-EO’S integrating sphere technology

There are numerous advantages to use an integrating sphere detector when measuring laser power:

- Performance: it lets you follow the ramp-up of a high-power laser because such detectors measure laser power extremely fast. Integrating sphere power detectors offer many advantages performance-wise: fast response, high sensitivity, excellent spatial uniformity.

- Cost-efficient solution: the same detector can be used for measuring several laser systems because the dynamic spectral range is very wide. Indeed, these detectors have a NIST-traceable calibration for their entire calibrated spectral range, and this calibration is valid from the noise floor to the maximum power: from tens of mW to 1000 W! This results in significant savings for customers who have many lasers to measure. Also, you do not need to purchase a display device to read your measurement since our INTEGRA technology is integrated into it. Just plug the detector into your computer.

- Improved safety: if you are particularly concerned about safety in your work environment, using an integrating sphere detector instead of a thermal detector is even safer because back-reflections are much weaker.

Working principle

An integrating sphere detector is composed of two elements. First, light enters a hollow sphere through a small aperture and it diffuses inside the sphere with multiple reflections on the sphere's inner coating.

Second, a small uniformly-lit aperture at another position in the sphere samples a portion of this diffused light and sends it onto a sensor.

Basically, integrating spheres act as attenuators to allow for the use of smaller and faster detectors.


Gentec-EO’s IS50A-1KW-RSI integrating sphere detector is available for purchase today. Contact your local representative for more information on this product.

2021-10-08 from Menlo Systems:

20 Years Menlo Systems – 20 Years Precision in Photonics

With the best measuring instruments, one can measure what no one could measure before.

More than once, seemingly tiny differences between measurement and theory have led to major advances in fundamental knowledge. The emergence of modern science itself is closely linked to the art of accurate measurement. Prof. Hänsch, Dr. Holzwarth, and Dr. Mei founded the Menlo Systems GmbH in 2001 with the vision to develop the most accurate instruments and techniques for the optical spectroscopy and to bring them to the market. As the pioneer of the optical frequency comb and femtosecond fiber lasers, Menlo Systems has worked with its customers to shape and continually expand the applications of frequency combs in the early years. 20 years after, optical frequency combs constitute the enabling technology for the quantum technologies and for quantum computers, as well as for numerous high precision metrology applications. In metrology institutes worldwide, they are the gold standard. Ultra stable lasers serving as optical reference systems, and terahertz spectroscopy systems complete the product portfolio and allow users to achieve highest precision in photonics. All products are manufactured at the headquarters in Martinsried near Munich. Menlo Systems' sales offices in the US, in China, and in Japan, and a global distributor network guarantee close relations to customers during and after the sales process at any time and place. The 20th company anniversary and a steadily growing business are confirmation that the vision of our founders became reality.

About Menlo Systems:

Menlo Systems GmbH is a leading developer and global supplier of instrumentation for high-precision metrology. The company with headquarters in Martinsried near Munich is known for its Nobel Prize winning optical frequency comb technology. With subsidiaries in the US and China and a global distributor network, Menlo Systems is closely connected to its customers from science and industry. The main product lines are optical frequency combs, time and frequency distribution, terahertz systems, ultrafast and ultrastable lasers, and corresponding control electronics. Besides standard production, Menlo Systems develops and manufactures custom made solutions for laser-based precision measurements.

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