Abstract

We report on the performance, structure and stability of periodic multilayer films containing silicon carbide (SiC) and aluminum (Al) layers designed for use as reflective coatings in the extreme ultraviolet (EUV). We find that SiC/Al multilayers prepared by magnetron sputtering have low stress, good temporal and thermal stability, and provide good performance in the EUV, particularly for applications requiring a narrow spectral bandpass, such as monochromatic solar imaging. Transmission electron microscopy reveals amorphous SiC layers and polycrystalline Al layers having a strong 111 texture, and relatively large roughness associated with the Al crystallites. Fits to EUV reflectance measurements also indicate large interface widths, consistent with the electron microscopy results. SiC/Al multilayers deposited by reactive sputtering with nitrogen comprise Al layers that are nearly amorphous and consid erably smoother than films deposited nonreactively, but no improvements in EUV reflectance were obtained.

© 2009 Optical Society of America

Full Article  |  PDF Article

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (13)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription