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High average-power ultrafast CPA Yb:KYW laser system with dual-slab amplifier
11RSS Center, Korea Electrotechnology Research Institute, 612 DMC Hi-Tech Industry Center, 1580 Sangam-dong, Mapo-gu, Seoul, 121-835, South Korea. ghkim@keri.re.kr
Optics Express
|March 16, 2012
Summary
A new Ytterbium-doped Potassium Tungstate (Yb:KYW) laser system was developed for ultrafast applications. This system achieves 181 fs pulses at 200 kHz and over 8 W of average power.
Area of Science:
- Laser Physics
- Ultrafast Optics
- Materials Science
Background:
- Diode-pumped solid-state lasers offer efficient and compact solutions for various applications.
- Ultrafast laser systems are crucial for high-precision material processing and scientific research.
- Yb:KYW is a promising gain medium for high-power, ultrashort pulse generation.
Purpose of the Study:
- To develop a diode-pumped, ultrafast Ytterbium-doped Potassium Tungstate (Yb:KYW) laser system.
- To achieve high-energy, ultrashort laser pulses through chirped-pulse amplification.
- To optimize laser performance for high repetition rates and average power.
Main Methods:
- Utilized chirped-pulse amplification (CPA) in a dual-slab regenerative amplifier.
- Employed spectral shaping of the seeding pulse from a master oscillator.
- Integrated a pulse picker for selecting desired pulse trains.
Main Results:
- Achieved compressed pulses with a pulse duration of 181 fs.
- Demonstrated a repetition rate of up to 200 kHz.
- Obtained an average power exceeding 8 W after compression and pulse picking.
Conclusions:
- The developed Yb:KYW laser system is capable of generating high-quality ultrafast pulses.
- The system's performance parameters (pulse duration, repetition rate, average power) are suitable for demanding applications.
- Chirped-pulse amplification with spectral shaping is an effective technique for optimizing ultrafast laser output.
