Abstract
Metallophthalocyanine and metallo-porphyrine derivatives, both of which have strong absorption band in the red/near-infrared (Q-band) and the blue/ultraviolet (B-band) spectral regions, were studied at 532 nm. With picosecond pulses, strong excited-state absorption was observed from the bottom of this manifold. On nanosecond time scales, this excited state may decay to a triplet state, or decay to the ground state. Due to the strong reverse-saturable absorber of these materials, excited-state absorption (ESA) and refraction at other wavelengths throughout the visible are also studied. The spectral behavior of the ESA depends on both the linear and excited-state spectra. The latter could be expected to be different for Q-band and B-band excitation.
| Original language | English (US) |
|---|---|
| Pages | 145 |
| Number of pages | 1 |
| State | Published - 1998 |
| Externally published | Yes |
| Event | Proceedings of the 1998 Conference on Lasers and Electro-Optics, CLEO - San Francisco, CA, USA Duration: May 3 1998 → May 8 1998 |
Other
| Other | Proceedings of the 1998 Conference on Lasers and Electro-Optics, CLEO |
|---|---|
| City | San Francisco, CA, USA |
| Period | 5/3/98 → 5/8/98 |
All Science Journal Classification (ASJC) codes
- Control and Systems Engineering
- Electrical and Electronic Engineering