Fiber lasers use semiconductor diodes as the light source to pump specialty optical fibers, which are infused with rare earth ions. The laser emission is created within optical fibers and delivered through a flexible optical fiber cable. As a result of their design and components, fiber lasers are reliable, efficient, and portable, and are easier to use. Additionally, fiber lasers have higher absorption, which enables faster cutting speed with less power and the ability to process a wider variety of materials. IPG reports that fiber lasers convert electrical energy to optical energy twice as efficiently as the closest competing technology and up to 30 times more efficiently than older technologies. IPG promotes the efficiency of its products by providing a fiber laser energy savings calculator on its website.
Portfolio 21 has asked the company to improve its environmental accounting and disclosure of its key performance indicators.
To the best of our knowledge the above information is accurate and was obtained from sources we believe to be reliable. Neither the information presented above nor any opinion expressed shall be construed as an offer to sell or a solicitation to buy the security. The views expressed are those of portfolio management as of 6/30/13 and may not reflect current opinions or subsequent events.