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Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Passively mode-locked interband cascade optical frequency combs.

Mahmood Bagheri1, Clifford Frez2, Lukasz A Sterczewski2

  • 1Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, 91109, USA. mahmood.bagheri@jpl.nasa.gov.

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|February 22, 2018
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This summary is machine-generated.

Researchers developed a new electrically-driven midwave infrared (mid-IR) frequency comb. This compact source enhances dual comb spectroscopy for chemical and biological agent detection.

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Area of Science:

  • Quantum Optics and Photonics
  • Spectroscopy
  • Laser Technology

Background:

  • Optical frequency combs have revolutionized fields from timekeeping to navigation.
  • Dual comb spectroscopy offers enhanced sensitivity and speed compared to traditional methods.
  • Midwave infrared (mid-IR) frequency combs are crucial for analyzing chemical and biological agents.

Purpose of the Study:

  • To demonstrate a novel electrically-driven frequency comb source in the mid-IR.
  • To enhance mid-IR multi-heterodyne frequency comb spectroscopy capabilities.
  • To provide a compact and efficient source for probing molecular absorption lines.

Main Methods:

  • Development of a monolithic interband cascade laser (ICL) with integrated gain and saturable absorber sections.
  • Passive mode-locking of the ICL to generate a broadband frequency comb.
  • Characterization of the comb's spectral bandwidth and center wavelength.

Main Results:

  • Demonstration of an electrically-driven frequency comb source.
  • Achieved over 1 THz bandwidth centered near 3.6 μm.
  • Successful monolithic integration of ICL gain and absorber sections.

Conclusions:

  • The new ICL-based frequency comb is a significant advancement for mid-IR spectroscopy.
  • This source will enable more sensitive and rapid detection of chemical and biological species.
  • Electrically-driven mid-IR combs offer a promising pathway for compact spectroscopic systems.