Femtosecond diode-pumped Nd:glass laser with >1-W average output power

Summary form only given. We report on a significant improvement in average output power of a diode-pumped Nd:glass laser, achieving >1 W mode locked and 2 W continuous wave. We used a 1-cm-wide, 806-nm 20-W diode bar and applied optimized mode matching (OMM) in the gain material in both the fast...

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Published inTechnical Digest. Summaries of Papers Presented at the Conference on Lasers and Electro-Optics. Conference Edition. 1998 Technical Digest Series, Vol.6 (IEEE Cat. No.98CH36178) p. 433
Main Authors Aus der Au, J., Loesel, F.H., Morier-Genoud, F., Moser, M., Keller, U.
Format Conference Proceeding
LanguageEnglish
Published IEEE 1998
Subjects
Design optimization
Diode lasers
Laser excitation
Laser mode locking
Laser modes
Optical design
Optical materials
Power generation
Power lasers
Pump lasers
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Summary:Summary form only given. We report on a significant improvement in average output power of a diode-pumped Nd:glass laser, achieving >1 W mode locked and 2 W continuous wave. We used a 1-cm-wide, 806-nm 20-W diode bar and applied optimized mode matching (OMM) in the gain material in both the fast (i.e., sagittal) axis and the slow (i.e., tangential) axis of the diode laser, following the cavity design first demonstrated by Kopf et al. (1995) for Cr:LiSAF. Applying OMM to both axes results in a highly elliptical laser mode inside the gain medium, because the pump beam can be focused much smaller in the diffraction-limited fast axis compared to the slow axis. The highly elliptical pump mode allows for improved heat removal by using a very thin 0.8-mm-thick Nd:glass material and by actively cooling only the upper and lower side of the glass.
ISBN:1557523390
DOI:10.1109/CLEO.1998.676460