Intra-cavity cryogenic optical refrigeration using high power vertical external-cavity surface-emitting lasers (VECSELs)

Intra-cavity cryogenic optical refrigeration using high power vertical external-cavity surface-emitting lasers (VECSELs).

A 7% Yb:YLF crystal is laser cooled to 131 ± 1 K from room temperature by placing it inside the external cavity of a high power InGaAs/GaAs VECSEL operating at 1020 nm with 0.15 nm linewidth. This is the lowest temperature achieved in the intracavity geometry to date and presents major progress towards realizing an all-solid-state compact optical cryocooler.

Vertical Cavity Surface Emitting Lasers

The goal of this project was to increase the power of vertical cavity surface emitting lasers and to convert their wavelength into the blue/ultraviolet and the infrared for sensing applications. We have increased the power to the multi-watt level and have generated several milliwatts of blue light using optical pumping. Electrical pump has been less successful, but we have identified the proble...

High-power single-mode vertical-cavity surface-emitting lasers

Articles you may be interested in Optimal photonic-crystal parameters assuring single-mode operation of 1300 nm AlInGaAs vertical-cavity surface-emitting laser Single-mode 1.27 μ m InGaAs vertical cavity surface-emitting lasers with temperature-tolerant modulation characteristics Appl. High-power single-mode vertical-cavity surface-emitting lasers with triangular holey structure Appl. Theory of...

Ultra-compact, high-yield intra-cavity contacts for GaAs/AlGaAs-based vertical-cavity surface-emitting lasers

A novel method of fabricating compact intra-cavity contacts with high yield for GaAs/AlGaAs-based vertical-cavity surface-emitting lasers is presented. By carefully tailoring the composition of highaluminum content layer, a highly selective Al2O3 etch-stop layer can be formed simultaneously with the oxide aperture during wet thermal oxidation. With this technique, contact metals can be uniforml...

Optical Injection Locking of Vertical Cavity Surface Emitting Lasers by