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High-energy, high-efficiency harmonic generation from a Cr:LiSrAlF(6) laser system
Optics Letters
|October 28, 2009
Summary
We developed a high-energy Cr:LiSAF laser system producing 860-nm pulses. Harmonic generation achieved record 50% conversion efficiency for UV light, demonstrating significant advancements in laser technology.
Area of Science:
- Laser Physics
- Nonlinear Optics
- Solid-State Lasers
Background:
- Cr:LiSrAlF(6) (Cr:LiSAF) lasers are tunable solid-state laser gain media.
- Q-switched operation enables high peak power laser pulses.
- Harmonic generation is crucial for extending laser wavelength capabilities.
Purpose of the Study:
- To develop a near-diffraction-limited Q-switched Cr:LiSAF laser system.
- To investigate harmonic generation for efficient UV light production.
- To achieve record-breaking conversion efficiencies and UV output energies.
Main Methods:
- Utilized a Q-switched Cr:LiSAF laser system.
- Employed beta-BaB(2)O(4) nonlinear crystals for harmonic generation.
- Characterized laser output at 860 nm and generated harmonics at 430 nm and 215 nm.
Main Results:
- Achieved 400 mJ pulse energy at 860 nm with a 2 Hz repetition rate.
- Generated 200 mJ at 430 nm and 40 mJ at 215 nm via harmonic conversion.
- Demonstrated a 50% second-harmonic conversion efficiency, a new record for Cr:LiSAF lasers.
Conclusions:
- The developed Cr:LiSAF laser system offers high energy and near-diffraction-limited output.
- Record efficiencies in harmonic generation pave the way for advanced UV light sources.
- This research advances the capabilities of Cr:LiSAF lasers for various applications.
