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High finesse pulsed optical cavity locking by tilt-locking technique.

Y You1, R Chiche1, L X Yan2

  • 1Laboratoire de l'Accélérateur Linéaire, Paris Sud 11 University, 91898 Orsay, France.

The Review of Scientific Instruments
|April 3, 2014
PubMed
Summary

The novel Tilt-Locking (TL) technique successfully locks pulsed lasers to high-finesse optical cavities, achieving ~80% coupling efficiency and stable locking for over an hour. This method shows promise comparable to existing techniques.

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Area of Science:

  • Laser physics
  • Optical cavities
  • Precision measurement

Background:

  • High-finesse Fabry-Perot cavities are crucial for laser stabilization.
  • Existing techniques like Pound-Drever-Hall have limitations for pulsed lasers.
  • Efficient laser locking is essential for various scientific applications.

Purpose of the Study:

  • To implement and evaluate the Tilt-Locking (TL) technique for locking a pulsed laser to a high-finesse optical cavity.
  • To compare the performance of TL with the established Pound-Drever-Hall technique.
  • To investigate and simulate the error signal characteristics of the TL technique in the far-field case.

Main Methods:

  • Application of the Tilt-Locking (TL) technique to couple a pulsed laser to a 28,000 finesse Fabry-Perot cavity.
  • Experimental validation of the TL technique's performance and stability.
  • Simulation of the error signal shape for the far-field case, considering various error sources.

Main Results:

  • Achieved stable laser locking with a coupling rate of approximately 80%.
  • Demonstrated locking durations exceeding 1 hour.
  • Experimental results confirmed simulations for obtaining symmetrical error signals by adjusting photodiode position.
  • TL technique performance was found comparable to the Pound-Drever-Hall technique.

Conclusions:

  • The Tilt-Locking (TL) technique is a viable and effective method for locking pulsed lasers to high-finesse optical cavities.
  • TL offers high and stable coupling efficiency, comparable to established methods.
  • The study provides valuable insights into error signal behavior in the far-field, enabling robust implementation.