What is it about?
Accurate control of the temperature of solid samples is an important pre-requisite in many surface and material science applications. Although optical heating using laser sources promises advantages over classical electrical heating approaches, like resistive or electron bombardment heating, laser heating is often thought to be expensive and inefficient for reflective sample. Only few application have used laser-based heating, predominantly if harsh process enviroments prevented electrical heating based on hot filaments. We show a new laser heating device that makes laser heating extremely efficient and reduces costs to a level that can easily compete with equipment needed for electrical heating.
Featured Image
Photo by Brands&People on Unsplash
Why is it important?
We demonstrate how a low-cost 455nm diode laser, i.e. a commercial engraving laser, can be used in a simple cavity-enhanced set-up to increases laser radiation absorption of a reflective platinum sample by at least 4-fold. The design used standard optical components, is compatible with ultra-high vacuum environments and able to heat a 10mm diameter Pt(111) to about 1300K.
Perspectives
We envision, that the shown cavity-enhanced laser heater has great potential in many surface science applications to replace traditional electrical heating devices, allowing for more rapid heating rates and cleaner vacuum. The shown devices offers more potential for further improvements applying better cavity mirrors than the polished solid Aluminum mirror used in this work
Kai Golibrzuch
Max-Planck-Gesellschaft zur Forderung der Wissenschaften
Read the Original
This page is a summary of: A simple cavity-enhanced laser-based heater for reflective samples, Review of Scientific Instruments, January 2025, American Institute of Physics,
DOI: 10.1063/5.0248517.
You can read the full text:
Contributors
The following have contributed to this page
