news digest ♦ Lasers
Laser innovator IPG to offer up to 3 million shares
The offering will consist of 2,800,000 shares to be sold by the Company and up to 200,000 shares to be sold by the Company’s chairman and CEO, Valentin P. Gapontsev
IPG Photonics Corporation has commenced a public offering of up to 3,000,000 shares of its common stock.
The Company intends to grant to the underwriters a 30-day option to purchase up to an additional 450,000 shares of the Company’s common stock.
The Company plans to use the net proceeds of the offering for general corporate purposes and to fund capital expenditures and working capital requirements. The Company may also use some of the net proceeds for acquisitions of complementary businesses and technologies, although no such acquisitions are currently pending.
BofA Merrill Lynch will be the sole book-running manager for this offering and Needham & Company, LLC and Stifel Nicolaus Weisel will act as co- managers.
An automatic shelf registration statement relating to the securities to be offered in this offering was filed with the Securities and Exchange Commission (the “SEC”) on February 27, 2012. The offering of these securities will be made pursuant to a prospectus supplement to the prospectus contained in the shelf registration statement, which prospectus supplement will be filed with the SEC.
The prospectus and prospectus supplement will be available at no charge on the SEC’s Web site at
www.sec.gov. When available, copies of the prospectus and prospectus supplement also may be obtained from BofA Merrill Lynch, 4 World Financial Centre, New York, NY 10080, Attention: Prospectus Department, or by emailing a request to
dg.prospectus_requests@
baml.com.
Locating explosives with laser beams
Scientists have found a way to detect chemicals over long distances, even when they are enclosed in containers
Most of us like to keep a safe distance from explosive substances, but in order to analyse them, close contact is usually inevitable.
Now, scientists at the Vienna University of Technology (TU Vienna) have developed a new way to detect chemicals inside a container over a distance of more than a hundred metres.
Laser light is scattered in a very specific way by different substances. Using this light, the contents of a non-transparent container can be analysed without opening it.
A bright laser beam hits the sample, the scattered light is collected by a telescope
“The method we are using is Raman-spectroscopy,” says Bernhard Lendl, a Professor at TU Vienna. The sample is irradiated with a laser beam. When the light is scattered by the molecules of the sample, it can change its energy. For example, the photons can transfer energy to the molecules by exciting molecular vibrations. This changes the wavelength of the light, and thus its colour. By analysing the colour spectrum of the scattered light, scientists can determine by what kind of molecules it must have been scattered.”
“Until now, the sample had to be placed very close to the laser and the light detector for this kind of Raman-spectroscopy”, says Bernard Zachhuber, one of the researchers. Due to his technological advancements, measurements can now be made
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www.compoundsemiconductor.net March 2012
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