Photonics Spectra: fiber core This is the syndication feed for Photonics Spectra: fiber core. https://www.photonics.com/Splash.aspx?Tag=fiber+core Fri, 29 Mar 2024 07:24:02 GMT Sat, 01 Jan 2011 00:00:00 GMT 1800 Licensing Agreement https://www.photonics.com/Articles/Licensing_Agreement_/p5/a45627 A45627 Sat, 01 Jan 2011 00:00:00 GMT Yb-Fiber Laser Is Efficiently Pumped at an Oblique Angle
Fiber lasers can be optically pumped by coupling the pump light directly into the fiber core, but because the acceptance angle of the core is relatively narrow, core pumping requires a high-quality — low divergence — pump beam (Figure 1a). Because the diode lasers commonly used as pumps cannot efficiently produce beams of the required quality, scientists developed cladding-pumped fibers that are more compatible with diode pumps (Figure 1b).


Figure 1. Because the acceptance angle for core pumping (broken red lines) is small, the pump laser must provide a high-quality (low divergence) beam (a). This requirement is relaxed in a cladding-pumped laser because the cladding has a larger acceptance angle (b). A disadvantage of these two...]]>
https://www.photonics.com/Articles/Yb-Fiber_Laser_Is_Efficiently_Pumped_at_an/p5/a32254 A32254 Fri, 01 Feb 2008 00:00:00 GMT
Outputs of Fiber Lasers Combined Coherently
The largest barrier to increasing the power from fiber lasers is the onset of nonlinear effects and optical damage that result from high power density in the fiber core. An obvious solution is to increase the core diameter, thereby reducing the power density, and a host of approaches involving large-mode-area fibers have emerged in recent years. An alternative, and perhaps less investigated, approach is to coherently combine the outputs of several lower-power lasers to produce a single high-power beam. Recently, researchers at the Weizmann Institute of Science in Rehovot, Israel, have demonstrated a technique of coherently combining the outputs of two fiber lasers to produce very nearly twice the power available from either laser...]]>
https://www.photonics.com/Articles/Outputs_of_Fiber_Lasers_Combined_Coherently/p5/a29414 A29414 Tue, 01 May 2007 00:00:00 GMT