The stimulated Raman effect provides an efficient means for producing coherent optical signals throughout the visible and infrared portion of the spectrum using a single laser source as exciter and either a crystal or a cell containing a gas or liquid as the target. The Raman-shifted output retains the high-intensity well-collimated monochromatic properties of the original laser. The objectives of the research program presented in the report were to investigate those aspects of the Raman effect relevant to the possibility of constructing a tunable Raman laser in which continuous tuning over tens of angstroms could be expected.
This post was published on February 27, 2020 1:11 pm
This FOIA release reveals details about the FBI's Public Access Line (PAL) policies and procedures. These…
DARPA program exhibits modular, first-of-kind capabilities The following article is archived from a press release…
For more than a decade, the NSA released information from the Intellipedia system. Hundreds of…
Today, the All-domain Anomaly Resolution Office (AARO) of the U.S. Department of Defense provided their…
Since October 2017, The Black Vault has investigated the Advanced Aerospace Threat Identification Program (AATIP),…
https://www.youtube.com/watch?v=3GNITLBj0hM The All-domain Anomaly Resolution Office (AARO), tasked to investigate Unidentified Anomalous Phenomena (UAP), made…