TY - JOUR
T1 - Efficient quasi-three-level Nd:YAG laser at 946 nm pumped by a tunable external cavity tapered diode laser
AU - Cheng, Haynes Pak Hay
AU - Jensen, Ole Bjarlin
AU - Tidemand-Lichtenberg, Peter
AU - Andersen, Peter E.
AU - Petersen, Paul Michael
AU - Sumpf, Bernd
AU - Erbert, Götz
AU - Pedersen, Christian
PY - 2010
Y1 - 2010
N2 - Using a tunable external cavity tapered diode laser (ECDL) pumped quasi-three-level Nd:YAG laser, a fivefold reduction in threshold and twofold increase in slope efficiency is demonstrated when compared to a traditional broad area diode laser pump source. A TEM00 power of 800 mW with 65% slope efficiency is obtained, the highest reported TEM00 power from any 946 nm Nd:YAG laser pumped by a single emitter diode laser pump source. A quantum efficiency of 0.85 has been estimated from experimental data using a simple quasi-three-level model. The reported value is in good agreement with published values, suggesting that the model is adequate. Improvement of the 946 nm laser due to the ECDL's narrow spectrum proves to be less significant when compared to its spatial quality, inferring a broad spectrum tapered diode laser pump source may be most practical. Experimental confirmation of such setup is given.
AB - Using a tunable external cavity tapered diode laser (ECDL) pumped quasi-three-level Nd:YAG laser, a fivefold reduction in threshold and twofold increase in slope efficiency is demonstrated when compared to a traditional broad area diode laser pump source. A TEM00 power of 800 mW with 65% slope efficiency is obtained, the highest reported TEM00 power from any 946 nm Nd:YAG laser pumped by a single emitter diode laser pump source. A quantum efficiency of 0.85 has been estimated from experimental data using a simple quasi-three-level model. The reported value is in good agreement with published values, suggesting that the model is adequate. Improvement of the 946 nm laser due to the ECDL's narrow spectrum proves to be less significant when compared to its spatial quality, inferring a broad spectrum tapered diode laser pump source may be most practical. Experimental confirmation of such setup is given.
KW - Laser
KW - Neodymium
KW - Diode-pumped
KW - Solid-state
U2 - 10.1016/j.optcom.2010.07.001
DO - 10.1016/j.optcom.2010.07.001
M3 - Journal article
SN - 0030-4018
VL - 283
SP - 4717
EP - 4721
JO - Optics Communications
JF - Optics Communications
IS - 23
ER -