Spectral hole-burning materials attractive for applications

R. M. Macfarlane, Robert M. Shelby

Masayuki Nogami

Tsunenori Asatsuma, Nobuhiko Umezu, Yoshihiro Takemoto +1 more

One of the most attractive features of spectral hole-burning (SHB) is the possible its application to higher-density data storage media(1,2). Since the recent successes of SHB at room temperature in Sm2+-doped materials(3-6), the possibility of their practical use has become much larger. In that sense, inorganic materials containing Sm2+ are of interest to us(7).

Masayuki Nogami

Kentarou Nouchi, Tsuneo Mitsuyu, Kimihiko Hirao +2 more

Summary form only given. Persistent spectral hole burning (PSHB) of rare-earth-doped inorganic materials has attracted much attention in view of application to high-density optical memories. In particular, it seems that the glass materials are advantageous for application in wavelength-selective optical devices, as well as the memory devices, because of their large inhomogeneous linewidth. The wavelength-selective devices are key components in the wavelength-division multiplexing system, which is important for the next-generation optical communication technology. The problem for practical application lies in the fact that PSHB of rare-earth ions in glasses is usually observed only at temperature below 20 K. However, room-temperature PSHB has been observed recently for Sm/sup 2+/-doped crystals and glasses.

Ming Tian, Tiejun Chang, Jiahua Zhang +3 more

Photon-gated spectral hole-burning in the organic donor-acceptor electron transfer system has attracted extensively interests because of its application background in frequency-domain optical storage. Several materials have been investigated from the aspects in hole-burning process[1–3], such as photon-gating effect, temperature dependence of hole width and hole-burning efficiency. A few works on hole-filling processes have been done[4], however, the filling mechanisms are not clear now.