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Ultrafast Airy beam optical parametric oscillator.

N Apurv Chaitanya1,2, S Chaitanya Kumar3, A Aadhi1

  • 1Photonic Sciences Lab., Physical Research Laboratory, Navarangpura, Ahmedabad 380009, Gujarat, India.

Scientific Reports
|August 2, 2016
PubMed
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Researchers created the first ultrafast Airy beam optical parametric oscillator (OPO). This device generates tunable, 2D Airy beams in the near-infrared, paving the way for new optical applications.

Area of Science:

  • Nonlinear Optics
  • Quantum Optics
  • Laser Physics

Background:

  • Ultrafast lasers are crucial for scientific research and technological advancements.
  • Optical parametric oscillators (OPOs) are versatile sources of tunable laser light.
  • Airy beams are non-diffracting beams with unique self-healing properties.

Purpose of the Study:

  • To demonstrate the first ultrafast Airy beam optical parametric oscillator (OPO).
  • To generate tunable, two-dimensional (2D) Airy beams in the near-infrared spectrum.
  • To characterize the properties of the generated Airy beams, including tuning range, power, pulse duration, and spectral bandwidth.

Main Methods:

  • Utilized a synchronously-pumped singly-resonant OPO cavity.
  • Introduced intracavity cubic phase modulation to the resonant Gaussian signal.

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  • Employed Fourier transformation to generate the 2D Airy beam in the output signal.

    • Main Results:

    • Successfully generated ultrafast 2D Airy beams.
    • Achieved a continuous tuning range from 1477 to 1727 nm (250 nm span).
    • Obtained an average power of up to 306 mW at 1632 nm with ~23 ps pulses and 1.7 nm spectral bandwidth.

    Conclusions:

    • The developed ultrafast Airy beam OPO is a novel and powerful tool for generating tailored optical beams.
    • The demonstrated tunability and power levels open possibilities for applications in nonlinear microscopy, optical trapping, and material processing.
    • This work represents a significant advancement in the field of ultrafast optics and beam shaping.