Accession Number : AD1013315


Title :   Direct Spectroscopy in Hollow Optical with Fiber-Based Optical Frequency Combs


Descriptive Note : Technical Report,01 Jun 2011,31 May 2015


Corporate Author : Kansas State University MANHATTAN, United States


Personal Author(s) : Corwin,Kristan L


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1013315.pdf


Report Date : 09 Jul 2015


Pagination or Media Count : 42


Abstract : Toward the creation of robust, portable frequency references in the near IR, we have isolated a single tooth from a fiber laser-based optical frequency comb for nonlinear spectroscopy and thereby directly referenced the comb. An 89 MHz erbium fiber laser frequency comb is directly stabilized to the P(23) (1539.43 nm) overtone transition of 12C2H2 inside a hollow-core photonic crystal fiber. To do this, a single comb tooth is isolated and amplified from 20 nW to 40 mW with sufficient fidelity to perform saturated absorption spectroscopy. The fractional stability of the comb, 7 nm away from the stabilized tooth, is shown to be 610-12 at 100 ms gate time, which is over an order of magnitude better than that of a comb referenced to a GPS-disciplined Rb oscillator.


Descriptors :   spectroscopy , fiber optics , optical fiber , oscillators , photonic crystals


Distribution Statement : APPROVED FOR PUBLIC RELEASE