Accession Number : ADA624079


Title :   US Army Research Laboratory Directed Energy Internship Program 2014


Descriptive Note : Final rept. Jan-Dec 2014


Corporate Author : ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE


Personal Author(s) : White, Jeffrey O


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a624079.pdf


Report Date : Nov 2015


Pagination or Media Count : 38


Abstract : This technical note is the final report for the 2014 Directed Energy Internship program at the US Army Research Laboratory. Six interns were mentored by 4 government employees. The projects included 1) a comparison of traditional erbium (Er):silica (SiO2) optical fiber to designs using Er: alumina (Al2O3) nanoparticles, 2) chirped seed amplification in a 1.6-kW ytterbium (Yb) fiber amplifier, 3) custom components for a 100-W Er amplifier, and 4) performance of coherent beam combining and power usage in fiber laser arrays with high fill-factor output. Three reports written by the interns are included as Appendices A through C. A report on the third project was published separately as ARL-TN-0672.


Descriptors :   *HIGH ENERGY LASERS , ALUMINUM OXIDES , AMPLIFICATION , ARMY RESEARCH , COMPARISON , ERBIUM , FIBER OPTICS , INTERNS , NANOPARTICLES , POWER , YTTERBIUM


Subject Categories : Lasers and Masers


Distribution Statement : APPROVED FOR PUBLIC RELEASE