Abstract
We report the characteristics of GHz bandwidth amplified spontaneous emission (ASE) from a hot Cs atom vapor cell, where the optical feedback was inhibited. When pumped by an 852 nm laser, both forward and backward ASE output near 894 nm showed a nonlinear increase in its power without a pump power threshold. A continual decrease in spectral width down to 4.7 GHz was experimentally observed as the ASE output power increased. Using the same vapor cell, we injected a 1mW signal to configure a single-pass optical amplifier, and we monitored the forward output both in temporal and spectral domains. We found the signal laser efficiently suppressed the ASE and obtained a large amplification factor over 700 at the pump power of 1.2 W.
Original language | English |
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Pages (from-to) | 126-132 |
Number of pages | 7 |
Journal | OSA Continuum |
Volume | 1 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2022 Jan 15 |
Bibliographical note
Publisher Copyright:© 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering