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Related Experiment Videos

Cover slip external cavity diode laser.

Adra V Carr1, Yancey H Sechrest, Scott R Waitukaitis

  • 1Department of Physics, University of Arizona, Tucson, Arizona, 85721, USA.

The Review of Scientific Instruments
|November 6, 2007
PubMed
Summary
This summary is machine-generated.

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A novel 671 nm diode laser offers a 40 GHz mode-hop-free tuning range by synchronizing cavity length and injection current. Its stable output is ideal for spectroscopy applications, demonstrated with lithium experiments.

Area of Science:

  • Atomic, Molecular, and Optical Physics
  • Laser Spectroscopy

Background:

  • Diode lasers are crucial for spectroscopy but often suffer from limited tuning ranges and mode-hops.
  • Maintaining stable laser output frequency and pointing is essential for precise measurements.

Purpose of the Study:

  • To develop a diode laser system with an extended mode-hop-free tuning range.
  • To ensure stable laser output pointing independent of frequency tuning.
  • To demonstrate the system's utility in spectroscopic applications.

Main Methods:

  • Utilized a 671 nm diode laser.
  • Implemented simultaneous ramping of external cavity length and laser injection current.
  • Employed a cover slip cavity design to stabilize output pointing.
  • Conducted experiments with lithium vapor and lithium atom beams.

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Main Results:

  • Achieved a 40 GHz mode-hop-free tuning range.
  • Demonstrated fixed laser output pointing across the tuning range.
  • Successfully applied the laser system to lithium spectroscopy.

Conclusions:

  • The developed diode laser system offers a significant improvement in tuning range and stability.
  • The system's simplicity, economy, and robustness make it suitable for various spectroscopic applications.
  • This technology advances the capabilities for high-resolution atomic spectroscopy.