美国J.A.Woollam www.jawoollam.com
J.A.Woollam公司于1987年由Woollam教授等创办。公司是由内布拉斯加州立大学的科研成果为基础衍生而来的专业生产光谱型椭圆偏振测量仪的厂商，公司研发、生产多种不同规格型号的椭偏仪，没有与椭偏仪无关的产品。 
J.A.Woollam公司拥有超过100项的椭偏专利技术，确保公司的技术一直处于领先地位。已有2000多套椭圆仪已被安装到世界各地，广泛应用于各种领域的科研与生产当中。 
专业的应用团队为用户提供一流的技术支持，从硬件到软件，从样品制备到建模分析，我们都会有最佳的建议带给用户。

The J.A. Woollam Company was founded in 1987 by Dr. John A. Woollam. Starting as a spin-off from the University of Nebraska, the J.A. Woollam Company has rapidly grown to become a worldwide leader in spectroscopic ellipsometry. We have been perfecting our technology for over 20 years and have secured over 100 patents.
The company employs more than 45 people, the majority of whom are engineers and scientists dedicated to the advancement of ellipsometry. We pride ourselves on the quality and workmanship of our products. Each system we sell is hand-assembled using custom- machined aluminum and high quality optics and electronics.
 
The J.A. Woollam Co. is located in the Cotswold Building, in the Historic Haymarket Area. This unique building erected in 1925 underwent an extensive renovation in 1996. The J.A. Woollam Co. has been located here since 1996 and occupies 35,400 square feet.