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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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Regenerative self-pulsating sources of large bandwidths
Optics Letters
|December 25, 2013
Summary
Researchers explored self-pulsating sources for generating ultrashort optical pulses. They achieved picosecond pulse generation and demonstrated a simplified experimental setup using cascaded regeneration and filtering.
Area of Science:
- Nonlinear Optics
- Laser Physics
- Optical Engineering
Background:
- Self-pulsating sources are crucial for generating ultrashort optical pulses.
- Cascaded regeneration via self-phase modulation and offset filtering offers a promising mechanism for pulse generation.
Purpose of the Study:
- To experimentally investigate self-pulsating sources utilizing cascaded regeneration.
- To explore the impact of large filter bandwidths on pulse generation.
- To demonstrate a simplified experimental setup for generating short optical pulses.
Main Methods:
- Experimental investigation of self-pulsating sources with cascaded regeneration.
- Utilizing large filter bandwidths (3.5 nm to semi-infinite).
- Employing dispersion compensation and amplification for pulse characterization.
Main Results:
- Self-starting operation from amplified spontaneous emission was confirmed.
- Generation of 2 ps pulses was achieved experimentally.
- Observation of 0.4 ps pulses after dispersion compensation and amplification.
- Demonstrated that filter combinations determine pulse bandwidths, simplifying setups.
Conclusions:
- Cascaded regeneration is an effective method for self-starting ultrashort pulse generation.
- The experimental setup can be simplified by controlling filter bandwidths and gain profiles.
- Achieved significant pulse compression, paving the way for advanced optical systems.
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