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Related Experiment Video

Updated: Apr 18, 2026

Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies

Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies

Published on: December 18, 2015

Gigahertz frequency comb from a diode-pumped solid-state laser.

Alexander Klenner, Stéphane Schilt, Thomas Südmeyer

|January 22, 2015

Summary

This summary is machine-generated.

We achieved the first carrier-envelope offset (CEO) frequency stabilization for a gigahertz solid-state laser. This breakthrough simplifies frequency comb generation without extra amplification, using a diode-pumped Yb:CALGO laser.

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Last Updated: Apr 18, 2026

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Published on: April 24, 2014

Area of Science:

Laser Physics
Quantum Optics
Nonlinear Optics

Background:

Frequency combs require stable carrier-envelope offset (CEO) frequency for precise optical frequency measurements.
Solid-state lasers offer advantages in robustness and power scaling for frequency comb applications.
Stabilizing the CEO frequency of gigahertz repetition rate lasers is crucial for high-resolution spectroscopy.

Purpose of the Study:

To demonstrate the first successful stabilization of the CEO frequency for a diode-pumped gigahertz solid-state laser oscillator.
To achieve CEO stabilization without requiring additional external amplification or pulse compression.
To analyze the noise characteristics and response functions for improved CEO stabilization.

Main Methods:

Utilized a diode-pumped Yb:CALGO solid-state laser reliably mode-locked with a SESAM.
Generated an octave-spanning supercontinuum in a highly nonlinear fiber.
Employed the standard f-to-2f method for CEO frequency detection and phase-locked it to a microwave reference using improved electronics with a 300 kHz bandwidth.

Main Results:

Achieved stable CEO frequency stabilization from a 1 GHz diode-pumped Yb:CALGO laser.
Generated 1.7 W average output power with 64 fs pulse durations.
Reached a low in-loop residual integrated phase noise of 744 mrad within a [1 Hz, 5 MHz] bandwidth.

Conclusions:

The presented work establishes a new benchmark for CEO stabilization in gigahertz solid-state lasers.
The direct stabilization approach simplifies frequency comb systems, making them more accessible.
Detailed noise analysis provides valuable insights for further advancements in optical frequency metrology.