Group delay dispersion tuned femtosecond Kerr-lens mode-locked Ti:sapphire laser

TL;DR

This paper introduces a novel all-mirror dispersion compensation design for a femtosecond Ti:sapphire laser, enabling dynamic tuning and stable, short pulses suitable for high-precision spectroscopy.

Contribution

The paper presents a new all-mirror dispersion compensation method for Ti:sapphire lasers, allowing wide spectral tuning and stable femtosecond pulse generation.

Findings

40 fs pulse duration at 80 MHz repetition rate

Spectral tuning range of 45 nm

All-mirror design enhances stability and tunability

Abstract

We report on a new design for a femtosecond Ti:sapphire oscillator in which dispersion compensation is realized exclusively using mirrors, including special mirrors with third order dispersion. This makes the oscillator dynamically tunable over a spectral range of 45 nm using an intracavity wedge-pair; and it delivers 40 fs pulses at 80 MHz repetition rate. Due to the all-mirror design, the oscillator represents an attractive base for a tunable frequency comb for high precision spectroscopy applications.