Self-sum-frequency mixing of neodymium generates yellow laser light

Oct. 1, 2007
Yellow monochromatic sources are useful in biomedical, remote sensing, and spectroscopy applications, but laser emission around 600 nm is difficult to achieve.

Yellow monochromatic sources are useful in biomedical, remote sensing, and spectroscopy applications, but laser emission around 600 nm is difficult to achieve. Professor Juan Capmany of the Universidad Miguel Hernández (Elche, Spain) led a group that achieved generation of continuous-wave yellow laser light in a neodymium (Nd3+)-doped, periodically poled, lithium-niobate bulk crystal.

End-pumping of the crystal with a Ti:sapphire laser achieved simultaneous oscillation in π polarization of the two laser “channels” in Nd3+ at 1084.4 and 1373.6 nm. Intracavity quasi-phase-matched self-sum-frequency mixing of these two infrared laser waves generated yellow lasing at 606 nm. The yellow laser reached a power of 15.6 mW from an absorbed pump power of 314 mW. The research demonstrates the potential for monolithic microchip yellow lasers that can be directly pumped by commercial diode lasers. “This is the first example of a yellow laser in which two infrared laser waves around 1060 and 1300 nm were simultaneously oscillated and self-sum-frequency mixed in the same crystal to yield yellow laser radiation,” said Capmany. Contact Juan Capmany at [email protected].

Sponsored Recommendations

Brain Computer Interface (BCI) electrode manufacturing

Jan. 31, 2025
Learn how an industry-leading Brain Computer Interface Electrode (BCI) manufacturer used precision laser micromachining to produce high-density neural microelectrode arrays.

Electro-Optic Sensor and System Performance Verification with Motion Systems

Jan. 31, 2025
To learn how to use motion control equipment for electro-optic sensor testing, click here to read our whitepaper!

How nanopositioning helped achieve fusion ignition

Jan. 31, 2025
In December 2022, the Lawrence Livermore National Laboratory's National Ignition Facility (NIF) achieved fusion ignition. Learn how Aerotech nanopositioning contributed to this...

Nanometer Scale Industrial Automation for Optical Device Manufacturing

Jan. 31, 2025
In optical device manufacturing, choosing automation technologies at the R&D level that are also suitable for production environments is critical to bringing new devices to market...

Voice your opinion!

To join the conversation, and become an exclusive member of Laser Focus World, create an account today!