Room-temperature-bonded Nd -YAG/diamond composite laser with an anti-reflection coating layer at the bonded interface for high-power and highly efficient oscillation
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2017-06-01 |
| Authors | Tomo Katsumata, Hiromasa Ichikawa, Ichiro Shoji |
| Institutions | Chuo University |
Abstract
Section titled āAbstractāSummary form only given. Thermal effects such as thermal lens and thermally induced birefringence are sources of degrading the beam quality and preventing higher-power operations in solid-state lasers. The composite lasers, which consist of laser-ion-doped and undoped materials, have been successful in reducing those thermal effects because the heat generated in the doped material can be effectively removed into the undoped region.In this paper, we have newly developed a Nd:YAG/diamond composite with an anti-reflection (AR) coating layer at the bonded interface; as shown in Fig. 1(a), an AR coated diamond and a Nd:YAG crystal were successfully room-temperature bonded. Figure 1(b) shows the laser characteristics. It is noted that the input and the output faces of all the samples were AR coated. The slope efficiency of the Nd:YAG/diamond composite with an AR coating layer at the interface was larger than that of the directly bonded composite and nearly the same with that of the noncomposite Nd:YAG. This indicates that the AR coating at the interface minimized the reflection loss. Moreover, still higher output power was obtained from the new composite than from the directly bonded composite.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
Section titled āReferencesā- 2015 - Characteristics of a Nd: YAG/diamond composite laser fabricated with the room-temperature bonding