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NV- diamond laser.

Alexander Savvin1, Alexander Dormidonov2, Evgeniya Smetanina1

  • 1Dukhov Automatics Research Institute, Sushchevskaya 22, Moscow, 127055, Russian Federation.

Nature Communications
|December 9, 2021
PubMed
Summary
This summary is machine-generated.

Researchers achieved lasing in optically pumped diamond samples using nitrogen-vacancy (NV-) centers for the first time. This study explores lasing conditions and gain saturation under high-power laser pumping of diamond crystals.

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Area of Science:

  • Quantum Optics
  • Materials Science
  • Solid-State Physics

Background:

  • Nitrogen-vacancy (NV) centers in diamond are promising for quantum applications.
  • Optical pumping is a key technique for manipulating NV centers.
  • Achieving lasing in solid-state systems requires specific conditions and understanding of gain dynamics.

Purpose of the Study:

  • To demonstrate lasing from NV- centers in an optically pumped diamond sample.
  • To investigate the lasing characteristics, including wavelength, spectrum, duration, and energy.
  • To analyze lasing conditions and gain saturation mechanisms under high-power laser excitation.

Main Methods:

  • Optical pumping of a diamond sample using a nanosecond train of 150-ps 532-nm laser pulses.
  • Characterization of lasing pulses (wavelength, spectrum width, duration, energy).
  • Utilizing a pump-probe scheme to study lasing dynamics and gain saturation.

Main Results:

  • First demonstration of lasing at NV- centers in an optically pumped diamond.
  • Lasing pulses centered at 720 nm with a 20 nm spectrum width and 1-ns duration.
  • Observed gain saturation attributed to NV- ionization and NV0 concentration increase.

Conclusions:

  • Optically pumped diamond with NV- centers can achieve lasing.
  • High-power pumping leads to gain saturation due to ionization and charge state changes.
  • This work opens avenues for diamond-based laser development and quantum technologies.