| Autor: |
Aus der Au, J., Loesel, F. H., Morier-Genoud, F., Moser, M., Keller, U. |
| Zdroj: |
Optics Letters; February 1998, Vol. 23 Issue: 4 p271-273, 3p |
| Abstrakt: |
We have demonstrated 175-fs pulses with 1??W and 300-fs pulses with 1.2??W of average output power at a pulse repetition rate of 117??MHz from a Nd:phosphate (Schott LG 760) glass laser pumped by a 1-cm-wide, 20-W diode laser bar. Stable soliton mode locking was achieved by use of an intracavity semiconductor saturable absorber mirror. We obtained more than 2??W of average power without mode locking. Using cylindrical cavity mirrors, we adapted the laser mode inside the Nd:glass to the highly elliptical pump beam in both dimensions (tangential and sagittal axes) while maintaining a nearly ideal circular TEM_00 output beam with M^2?1.2.?Overpumping the laser mode in the tangential plane and efficient unidirectional heat removal in the sagittal plane using a 0.8-mm thin Nd:glass also contributed to the good output-beam quality. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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