Theoretical modeling and experimental demonstration of Raman probe induced spectral dip for realizing a superluminal laser

Joshua Yablon*, Zifan Zhou, Minchuan Zhou, Ye Wang, S. Tseng, M. S. Shahriar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

We have demonstrated experimentally a Diode-Pumped Alkali Laser (DPAL) with a Raman resonance induced dip in the center of the gain profile, in order to produce an anomalous dispersion, necessary for making the laser superluminal. Numerical calculations match closely with experimental results, and indicate that the laser is operating superluminally, with the group index far below unity (∼0.00526) at the center of the dip. The estimated factor of enhancement in the sensitivity to cavity length perturbation is ∼190, approximately equaling the inverse of the group index. This enhancement factor can be made much higher via optimal tuning of parameters. Such a laser has the potential to advance significantly the field of high-precision metrology, with applications such as vibrometry, accelerometry, and rotation sensing.

Original languageEnglish (US)
Pages (from-to)27444-27456
Number of pages13
JournalOptics Express
Volume24
Issue number24
DOIs
StatePublished - Nov 28 2016

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Fingerprint Dive into the research topics of 'Theoretical modeling and experimental demonstration of Raman probe induced spectral dip for realizing a superluminal laser'. Together they form a unique fingerprint.

Cite this