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Updated: Jan 26, 2026
06:42
Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
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Phase-stabilized 100 mW frequency comb near 10 μm
Kana Iwakuni1, Gil Porat1, Thinh Q Bui1
11Department of Physics, JILA, National Institute of Standards and Technology and University of Colorado, University of Colorado, Boulder, CO 80309 USA.
Applied Physics. B, Lasers and Optics
|April 19, 2019
Summary
We developed a high-power, tunable mid-infrared frequency comb for molecular spectroscopy. This phase-stabilized system enables precise analysis of large molecules like C60.
Area of Science:
- Quantum Optics
- Spectroscopy
- Laser Physics
Background:
- Long-wavelength mid-infrared (MIR) frequency combs are crucial for molecular spectroscopy.
- High power and tunability are essential for investigating complex molecules such as C60.
Purpose of the Study:
- To present a high-power, phase-stabilized frequency comb operating near 10 μm.
- To demonstrate its tunability and application in molecular spectroscopy.
Main Methods:
- Generation of a frequency comb using a synchronously pumped, singly resonant optical parametric oscillator (OPO).
- Utilizing an AgGaSe2 nonlinear crystal for MIR generation.
- Phase-locking of the idler wave's repetition rate (f_rep) and carrier-envelope offset frequency (f_ceo) to microwave signals.
Main Results:
- Continuous tuning of the OPO from 8.4 to 9.5 μm.
- Maximum average idler power of 100 mW achieved at 8.5 μm.
- Successful phase-stabilization of the frequency comb's key parameters.
Conclusions:
- The developed AgGaSe2-based OPO is a powerful tool for MIR frequency comb generation.
- This system offers high power and tunability for precise molecular spectroscopy.
- Potential applications include sensitive direct frequency comb spectroscopy of large molecules.
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