Injection-seeded optical parametric oscillator operating in the region of 486.1 nm

Area of Science:

• Optics and Photonics
• Laser Physics

Background:

• Optical parametric oscillators (OPOs) are versatile sources of tunable coherent light.
• Developing OPOs with narrow spectral linewidths is crucial for high-resolution spectroscopic applications.

Purpose of the Study:

• To demonstrate an injection-seeded optical parametric oscillator (OPO) operating near 486.1 nm.
• To achieve a spectrally narrowed output from the OPO system.

Main Methods:

• Utilized a Nd:YAG laser's third harmonic as the pump source.
• Employed injection seeding with an idler wave (near 1313 nm) from a Nd:YLF laser for frequency control.
• Characterized the spectral linewidth of the generated signal output.

Main Results:

• Successfully demonstrated an injection-seeded OPO.
• Achieved a signal output wavelength centered near 486.1 nm.
• Obtained a line-narrowed signal output with a spectral linewidth of 0.014 nm.

Conclusions:

• The demonstrated injection-seeded OPO provides a stable and narrow spectral output.
• This system is suitable for applications requiring high spectral resolution, such as atomic spectroscopy.
• The method of frequency control via idler wave injection proves effective for OPO linewidth reduction.