Self-mode-locked NaCl:OH(-) color-center laser

Area of Science:

• Laser physics
• Nonlinear optics
• Materials science

Background:

• Color-center lasers are crucial for generating tunable laser light.
• Achieving ultrashort pulse generation requires advanced mode-locking techniques.

Purpose of the Study:

• To demonstrate self-mode locking in an NaCl:OH,(-) color-center laser.
• To utilize the Kerr effect for initiating and sustaining ultrashort pulse generation.

Main Methods:

• Incorporated a high-nonlinearity glass rod within the laser cavity.
• Employed regenerative acousto-optic modulation to initiate mode-locking.
• Exploited the optical Kerr effect for self-mode locking.

Main Results:

• Successfully achieved self-mode locking in the NaCl:OH,(-) laser system.
• Generated laser pulses with durations under 100 femtoseconds (fs).
• Operated at a wavelength of approximately 1575 nm.

Conclusions:

• Self-mode locking via the Kerr effect is an effective method for generating ultrashort pulses.
• This technique offers a pathway to more compact and efficient ultrashort pulse laser systems.
• The demonstrated method is applicable to other laser systems requiring femtosecond pulse generation.