Atomic wavelength reference for a temperature-tunable 1341-nm Nd(3+):YAlO(3) laser.

Area of Science:

• Laser physics and spectroscopy.
• Solid-state laser technology.

Background:

• Miniature diode-pumped lasers are crucial for various applications.
• Precise wavelength tuning and stability are often required for laser systems.

Purpose of the Study:

• To demonstrate a method for precise wavelength setting and stabilization of a diode-pumped temperature-tunable laser.
• To achieve long-term stability of 1 pm within a 1-nm tuning range.

Main Methods:

• Utilized a miniature monolithic diode-pumped Neodymium-doped Yttrium Aluminum Perovskite (Nd3+:YAlO3) laser.
• Employed an optogalvanic signal from the 1341.1686-nm 5s-3p transition in helium for feedback control.
• Leveraged the measured temperature tuning rate of the laser for precise wavelength selection.

Main Results:

• The laser system achieved precise wavelength setting anywhere within its 1-nm tuning range.
• Demonstrated exceptional long-term wavelength stability of 1 pm.

Conclusions:

• The optogalvanic feedback method provides effective wavelength stabilization for diode-pumped tunable lasers.
• This technique enables precise control over laser output, enhancing its utility in spectroscopic and other applications.