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 |
|---|---|
| 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 |
|---|---|
| Country | United States |
| City | San Francisco |
| Period | 16/2/15 → 16/2/18 |
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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
Cite this
Solid-state lasers directly pumped by InGaN diode lasers : Ti:sapphire and Pr3+:LiYF4 lasers. / Tanaka, Hiroki; Kariyama, Ryosuke; Iijima, Kodai; Sawada, Ryota; Kannari, Fumihiko.
Solid State Lasers XXV: Technology and Devices. Vol. 9726 SPIE, 2016. 97261X.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Solid-state lasers directly pumped by InGaN diode lasers
T2 - Ti:sapphire and Pr3+:LiYF4 lasers
AU - Tanaka, Hiroki
AU - Kariyama, Ryosuke
AU - Iijima, Kodai
AU - Sawada, Ryota
AU - Kannari, Fumihiko
PY - 2016/7/15
Y1 - 2016/7/15
N2 - 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.
AB - 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.
KW - diode-pumped
KW - mode-locking
KW - Q-switching
KW - solid-state laser
KW - ultrafast laser
KW - visible laser
UR - http://www.scopus.com/inward/record.url?scp=84981495350&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84981495350&partnerID=8YFLogxK
U2 - 10.1117/12.2213815
DO - 10.1117/12.2213815
M3 - Conference contribution
VL - 9726
BT - Solid State Lasers XXV: Technology and Devices
PB - SPIE
ER -