Abstract
The femtosecond laser-modified region in isotropic glass medium shows a big optical birefringence. Transmission of the birefringent regions between two crossed polarizers depends on phase retardation and the orientation angle of the birefringent optical axes. Based on this effect, three-dimensional (3D) multilevel memory was proposed and demonstrated for nonvolatile memory up to eight levels, in contrast to the standard two-level technology. Eight-level writing and reading are distinguishable in fused silica with a near-infrared femtosecond laser. The retention of this memory is characterized for nonvolatile applications.
| Original language | English |
|---|---|
| Pages (from-to) | 111-113 |
| Number of pages | 3 |
| Journal | Chinese Optics Letters |
| Volume | 4 |
| Issue number | 2 |
| State | Published - Feb 2006 |
| Externally published | Yes |