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Updated: Jun 22, 2026

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

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Published on: February 28, 2016

Passively mode-locked Yb:KLu(WO4)2 oscillators.

U Griebner, S Rivier, V Petrov

|June 5, 2009

Summary

Researchers achieved ultrashort laser pulses using a novel Ytterbium-doped potassium lutetium tungstate crystal. This Yb:KLu(WO4)2 laser generated the shortest pulses to date, demonstrating its potential for advanced laser applications.

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Area of Science:

Laser Physics
Materials Science
Optoelectronics

Background:

Development of ultrashort pulse lasers is crucial for various scientific and technological applications.
Ytterbium-doped tungstate crystals are promising gain media for generating ultrashort laser pulses.
Exploring novel crystalline materials is essential for advancing laser performance.

Purpose of the Study:

To demonstrate passive mode locking using the novel monoclinic double tungstate crystal Yb:KLu(WO4)2.
To achieve the shortest possible pulse durations from an Ytterbium-doped tungstate laser.
To investigate the performance of Yb:KLu(WO4)2 for ultrashort pulse generation.

Main Methods:

Passive mode locking utilizing a semiconductor saturable absorber.
Characterization of laser performance with polarization oriented along different crystallo-optic axes (Nm and Np).
Comparison of laser output under Ti:sapphire and diode laser pumping.

Main Results:

Generation of ultrashort laser pulses with a minimum duration of 81 fs.
Achieved average output power of 70 mW at a wavelength of 1046 nm.
Demonstrated femtosecond and picosecond pulse regimes.

Conclusions:

Yb:KLu(WO4)2 is a highly promising active medium for generating ultrashort laser pulses.
The demonstrated performance highlights the potential of this novel crystal for advanced laser systems.
This study represents the first demonstration of ultrashort pulse generation using Yb:KLu(WO4)2.