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Efficient diamond Raman laser generating 65 fs pulses.

Michelle Murtagh, Jipeng Lin, Richard P Mildren

|July 21, 2015

Summary

This summary is machine-generated.

We developed a femtosecond diamond Raman laser producing 890 nm pulses with 32% slope efficiency. Subsequent pulse compression achieved 65 fs durations, advancing ultrashort pulsed laser technology.

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Area of Science:

Laser physics
Nonlinear optics

Background:

Femtosecond lasers are crucial for advanced research.
Diamond Raman lasers offer unique wavelength tuning capabilities.
Efficient generation and compression of ultrashort pulses remain a challenge.

Purpose of the Study:

To demonstrate a synchronously-pumped femtosecond diamond Raman laser.
To investigate the Raman conversion of ultrashort pulses.
To achieve significant pulse compression of the generated output.

Main Methods:

Utilized a mode-locked Ti:Sapphire laser for synchronous pumping.
Employed a diamond Raman gain medium.
Performed pulse compression using a prism-pair.
Conducted theoretical modeling of Raman conversion mechanisms.

Main Results:

Achieved femtosecond Raman laser operation at 890 nm.
Obtained a high slope efficiency of 32%.
Broadened the Stokes output bandwidth for compression.
Successfully compressed pulses to 65 fs.

Conclusions:

Demonstrated efficient femtosecond Raman conversion in diamond.
Validated understanding of physical mechanisms through modeling.
The developed laser system is suitable for in-depth characterization of ultrashort pulsed lasers.