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Broadly tunable continuous-wave orange-red source based on intracavity-doubled Cr4+:forsterite laser
1Department of Physics, Koç University, Sariyer, Istanbul, Turkey. asennar@ku.edu.tr
Applied Optics
|August 1, 2002
Summary
Researchers developed a room-temperature, continuous-wave Cr4+:forsterite laser. This laser achieves efficient orange-red light generation via intracavity frequency doubling, setting a new record for power output.
Area of Science:
- Laser physics
- Nonlinear optics
Background:
- Cr4+:forsterite lasers offer broad tunability.
- Frequency doubling enhances laser output capabilities.
Purpose of the Study:
- To demonstrate a room-temperature, continuous-wave, intracavity frequency-doubled Cr4+:forsterite laser.
- To achieve tunable output in the orange-red spectrum.
Main Methods:
- Utilized a periodically poled lithium niobate crystal for intracavity doubling.
- Employed gratings with varying periods for tunability.
Main Results:
- Achieved tunable second-harmonic output between 613 and 655 nm.
- Generated up to 45 mW of continuous-wave output at 630 nm.
- Demonstrated record second-harmonic power generation for a CW Cr4+:forsterite laser.
Conclusions:
- Intracavity frequency doubling in Cr4+:forsterite lasers is effective for orange-red light generation.
- This technology offers a new avenue for tunable laser sources.
- The achieved power levels represent a significant advancement in the field.