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Related Experiment Videos

Passively mode-locked 914-nm Nd:YVO4 laser.

A Schlatter1, L Krainer, M Golling

  • 1Institute of Quantum Electronics, Department of Physics, Swiss Federal Institute of Technology, ETH Zürich Hönggerberg, Wolfgang-Pauli-Strasse 16, 8093 Zürich, Switzerland. schlatter@phys.ethz.ch

Optics Letters
|January 15, 2005
PubMed
Summary

This study presents the first mode-locked Neodymium-doped Yttrium Orthovanadate (Nd:YVO4) laser at 914 nm, achieving 3-picosecond pulses using a semiconductor saturable-absorber mirror.

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Area of Science:

  • Laser physics
  • Solid-state lasers
  • Nonlinear optics

Background:

  • Neodymium-doped Yttrium Orthovanadate (Nd:YVO4) is a widely used laser gain medium.
  • Mode-locking is crucial for generating ultrashort laser pulses.
  • Previous research has not demonstrated mode-locking on the 4F3/2-4I9/2 transition of Nd:YVO4 at 914 nm.

Purpose of the Study:

  • To demonstrate the first mode-locked Nd:YVO4 laser operating on the 4F3/2-4I9/2 transition at 914 nm.
  • To characterize the performance of this novel laser system.

Main Methods:

  • Utilized a standard delta cavity configuration.
  • Employed a Ti:sapphire laser for pumping.
  • Implemented a semiconductor saturable-absorber mirror (SESAM) for passive mode-locking.

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Main Results:

  • Achieved stable mode-locking with 3-picosecond (ps) pulse durations.
  • Obtained a repetition rate of 233.8 megahertz (MHz).
  • Generated an average output power of 42 milliwatts (mW) and an accumulated output power of approximately 150 mW at 1.4 W pump power.

Conclusions:

  • Successfully demonstrated the first mode-locked Nd:YVO4 laser at 914 nm.
  • The developed laser system offers a new source for applications requiring ultrashort pulses in this wavelength range.
  • The use of SESAMs provides an effective method for passive mode-locking in Nd:YVO4 lasers.