Tunable spectral squeezers based on monolithically integrated diamond Raman resonators
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2022-04-11 |
| Journal | Applied Physics Letters |
| Authors | E. Granados, Georgios Stoikos, Daniel T. Echarri, K. Chrysalidis, V. N. Fedosseev |
| Institutions | Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy, University of Strathclyde |
| Citations | 15 |
Abstract
Section titled āAbstractāWe report on the generation and tuning of single-frequency laser light in a monolithic Fabry-PĆ©rot diamond Raman resonator operating in the visible spectral range. The device was capable of squeezing the linewidth of a broad multi-mode nanosecond pump laser (ĪĪ½p= 7.2 Ā± 0.9 GHz at Ī»p= 450 nm) to a nearly Fourier-limited single axial mode Stokes pulse (ĪĪ½S= 114 Ā± 20 MHz at Ī»S= 479 nm). The tuning was achieved by precise adjustment of the resonator temperature, with a measured frequency-temperature tuning slope of āĪ½0/āTā ā3 GHz/K, and a temperature dependence of the first-order Raman phonon line of āĪ½R/āTā +0.23 GHz/K. The Stokes center frequency was tuned continuously for over 20 GHz (more than twice the free spectral range of the resonator), which, in combination with the broad Ti:Sapphire laser spectral tunability, enables the production of Fourier-limited pulses in the 400-500 nm spectral range. The Stokes center-frequency fluctuations were 52 MHz (RMS) when the temperature of the resonator was actively stabilized. Moreover, the conversion efficiency was up to 30%, yielding an overall power spectral density enhancement of >25Ć from pump to Stokes pulse.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
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