Scheme for achieving a continuous-wave laser operation at 1178  nm

Area of Science:

• Laser physics
• Nonlinear optics
• Materials science

Background:

• The 1178 nm laser wavelength is crucial for various scientific and industrial applications.
• Efficient generation of high-power 1178 nm lasers has been a significant challenge.
• Previous methods often lacked the required output power or relied on complex setups.

Purpose of the Study:

• To demonstrate a novel and efficient scheme for generating a high-power 1178 nm laser.
• To achieve output power exceeding previous records using a crystalline Raman gain medium.
• To establish a superior method for 1178 nm laser generation.

Main Methods:

• Utilizing a high-power 1018 nm fiber laser as the pump source.
• Employing chemical vapor deposition (CVD) diamond as the Raman gain medium.
• Characterizing the output power and spectral properties of the generated laser.

Main Results:

• Successfully generated a 1178 nm laser with an output power of 34.6 W.
• Achieved the highest reported output power for a 1178 nm laser using a crystalline Raman gain medium.
• Demonstrated the effectiveness and superiority of the proposed laser generation scheme.

Conclusions:

• The developed scheme offers a highly efficient method for generating high-power 1178 nm lasers.
• CVD diamond is an excellent Raman gain medium for achieving significant output power at 1178 nm.
• This work paves the way for broader applications requiring high-power 1178 nm laser sources.