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42-fs diode-pumped Yb:Ca4YO(BO3)3 oscillator.
Akira Yoshida1, Andreas Schmidt, Huaijin Zhang
1Max Born Institute, Max-Born-Str. 2a, D-12489 Berlin, Germany.
Optics Express
|December 18, 2010
Summary
Researchers developed a femtosecond laser using a Yb:Ca4YO(BO3)3 crystal, achieving ultra-short pulses. This advancement in ytterbium-doped lasers offers new possibilities for ultrafast optics applications.
Area of Science:
- Optics and Photonics
- Laser Physics
- Materials Science
Background:
- Femtosecond lasers are crucial for ultrafast science.
- Yb3+-doped materials are promising for laser development.
- Self-frequency-doubling crystals offer compact laser solutions.
Purpose of the Study:
- To demonstrate a passively mode-locked femtosecond laser.
- To utilize the self-frequency-doubling crystal Yb:Ca4YO(BO3)3.
- To achieve ultra-short pulse durations from Yb3+-doped bulk material.
Main Methods:
- Passively mode-locked laser oscillator design.
- Pumping with a two-section distributed Bragg-reflector tapered diode-laser.
- Utilizing the Yb:Ca4YO(BO3)3 self-frequency-doubling crystal.
Main Results:
- Generation of femtosecond pulses at 1050 nm.
- Achieved pulse durations of 46 fs without external compression.
- Obtained 42 fs pulses with external compression.
- Demonstrated shortest pulses from Yb3+-doped bulk material oscillators.
Conclusions:
- The Yb:Ca4YO(BO3)3 crystal is effective for femtosecond laser generation.
- The developed laser system produces record-short pulses.
- This work advances ultrafast laser technology using Yb3+-doped materials.
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