Abstract
We report our recent progress of solid-state lasers, the titanium-doped sapphire laser and the praseodymium-doped LiYF4 (Pr3+:LiYF4) laser, directly pumped by InGaN diode lasers of green and blue. While the titanium-doped sapphire laser can be pumped by both blue and green diode lasers because of its broad absorption spectrum, we find 450-nm diode laser pumping inefficient for its power scaling owing to the onset of an additional absorption loss induced by the blue pump laser. The degradation of the performance of a Ti:sapphire laser induced by a 450-nm diode pumping is experimentally revealed. Furthermore, we demonstrate a passively mode-locked Ti:sapphire laser pumped by two green diode lasers of 1-W, and 74 fs pulses at a repetition rate of 120 MHz with an averaged output power of 45 mW are obtained. The Pr3+:LiYF4 laser, one of the most promising candidates as a visible laser, has become possible to be pumped directly by blue diode lasers of 440-nm wavelength. We demonstrate the power scaling at 523 and 640 nm oscillation, a passive Q-switching at 640 nm with a Cr4+:YAG saturable absorber by utilizing polarization-combined blue diode lasers as the pump source.
Original language | English |
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Title of host publication | Solid State Lasers XXV: Technology and Devices |
Publisher | SPIE |
Volume | 9726 |
ISBN (Electronic) | 9781628419610 |
DOIs | |
Publication status | Published - 2016 Jul 15 |
Event | Solid State Lasers XXV: Technology and Devices - San Francisco, United States Duration: 2016 Feb 15 → 2016 Feb 18 |
Other
Other | Solid State Lasers XXV: Technology and Devices |
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Country/Territory | United States |
City | San Francisco |
Period | 16/2/15 → 16/2/18 |
Keywords
- diode-pumped
- mode-locking
- Q-switching
- solid-state laser
- ultrafast laser
- visible laser
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Electrical and Electronic Engineering
- Applied Mathematics