Efficient high-energy SHG using a triaxial flashlamp-pumped dye laser

Area of Science:

• Laser physics
• Nonlinear optics

Background:

• Efficient high-energy laser systems are crucial for various scientific applications.
• Second-harmonic generation (SHG) is a key process for frequency conversion in lasers.

Purpose of the Study:

• To describe a novel triaxial flashlamp-pumped dye laser system.
• To demonstrate its capability for efficient high-energy second-harmonic generation (SHG).

Main Methods:

• The laser system comprises a tunable oscillator and a single amplifier operating near 610 nm.
• An angle-tuned potassium dihydrogen phosphate (KDP) crystal was used as the harmonic generator.
• Cylindrical focusing optics were employed for the SHG process.

Main Results:

• The laser system exhibited good beam quality, enabling efficient SHG.
• A typical energy output of 100 mJ at 305 nm was achieved.
• A doubling efficiency of 12% was obtained for the SHG process.

Conclusions:

• The described triaxial flashlamp-pumped dye laser is effective for high-energy SHG.
• The system demonstrates a practical approach to efficient frequency conversion using KDP crystals.