title: Comparative study on diode-pumped continuous wave laser at 607  nm using differently doped Pr(3+):LiYF(4) crystals and wavelength tuning to 604  nm.
abstract: We comparatively study an InGaN laser-diode-pumped continuous-wave laser at ∼607  nm (σ polarization) using differently doped Pr:LiYF4single crystals. Maximum output power and slope efficiency at this wavelength were up to 209 mW and 47.1%, respectively, using a 0.2 at. % doped and 8 mm sample. Findlay-Clay analysis shows roundtrip losses, including reabsorption loss at this particular emission of about 1.2% using the 0.2 at. % doped sample, which is lower than that of samples with higher doping concentrations at 0.5 and 1 at. %. Using a 0.15 mm glass plate as a Fabry-Perot etalon, a maximum output power of 73 mW was achieved at ∼604  nm (π polarization) with slope efficiency of 17.2% for what is believed to be the highest result currently.
authors.forename: Yongjie
authors.initials: Y
authors.lastname: Cheng
authors.forename: Bin
authors.initials: B
authors.lastname: Xu
authors.forename: Biao
authors.initials: B
authors.lastname: Qu
authors.forename: Saiyu
authors.initials: S
authors.lastname: Luo
authors.forename: Han
authors.initials: H
authors.lastname: Yang
authors.forename: Huiying
authors.initials: H
authors.lastname: Xu
authors.forename: Zhiping
authors.initials: Z
authors.lastname: Cai
mesh_terms: D003460:Crystallization; D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D053844:Lasers, Solid-State; D011221:Praseodymium / Q000737:chemistry*
chemical_list: D011221:Praseodymium