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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

Hybridly-pumped continuous-wave optical parametric oscillator.

I Breunig¹, J Kiessling, B Knabe

¹Institute of Physics, University of Bonn, Wegelerstr. 8, 53115 Bonn, Germany. breunig@physik.uni-bonn.de

|June 11, 2008

Summary

Researchers developed a novel optical parametric oscillator requiring minimal pump power. This breakthrough utilizes an intracavity gain medium, enabling tunable output and demonstrating potential for diode-pumped systems.

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Area of Science:

Nonlinear optics
Laser physics
Quantum optics

Background:

Continuous-wave singly-resonant optical parametric oscillators (SROPOs) are crucial for generating tunable laser light.
Achieving low-threshold SROPOs typically requires high-power pump lasers, limiting their accessibility and applications.

Purpose of the Study:

To demonstrate a SROPO with a significantly reduced pump power threshold.
To investigate the influence of an intracavity gain medium on SROPO performance, including bistable behavior.
To explore the feasibility of a completely diode-pumped SROPO system.

Main Methods:

Implementation of an additional intracavity gain medium pumped incoherently within a SROPO cavity.
Characterization of the SROPO's output power and tunability with respect to pump power.

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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

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Published on: May 30, 2014

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

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Analysis of the idler power's bistable behavior as a function of intracavity amplifier pumping.

Main Results:

The developed SROPO operates with less than 100 mW of single-frequency pump power, a record low.
A clear bistable behavior in idler power was observed, strongly dependent on the incoherent pumping of the gain medium.
The system was successfully demonstrated to be entirely diode-pumped, eliminating the need for complex pump lasers.

Conclusions:

The integration of an incoherently pumped intracavity gain medium effectively lowers the threshold of SROPOs.
Bistability offers a new control mechanism for SROPO output, tunable via the amplifier's pump.
This work paves the way for compact, efficient, and fully diode-pumped tunable light sources.