Highly efficient InGaN-LD-pumped bulk Pr:YLF orange laser at 607nm

Power scaling of blue-diode-pumped Pr:YLF lasers at 523.0, 604.1, 606.9, 639.4, 697.8 and 720.9 nm

“…For orange laser operation at about 604 and 607 nm, we used a 8-mm-long Pr:YLF crystal with doing concentration of only 0.2 at%. The weakly doped laser crystal was proved to be favorable for the orange laser operation because of the reduced reabsorption loss [14,15]. The relatively long crystal as a compensation of the weak concentration improved the absorption ratio to about 48%.…”

Modeling the performance characteristics of Pr3+: ZBLAN fiber laser at 638 nm

“…ZBLAN (ZrF 4 -BaF 2 -LaF 3 -AlF 3 -NaF) is one of the glasses which is relatively easy to prepare, and can be doped with rare-earth ions (Shinn et al 1983). Praseodymium doped ZBLAN fibers support possible laser transitions in the blue, green, orange and red operating at room temperature (Xu et al 2013;Liu et al 2013;Qu et al 2014).…”

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

“…[8] for energy level diagram). With different hosts producing some differences of the so-called Stark energy gap and taking different polarization states into account, the emission wavelengths are actually various in orange around 600 nm, such as 607.2 nm (σ polarization) [9] and 604.2 nm (π polarization) [10] in Pr:YLF, 610 nm in Pr :KY 3 F 10 [11], and 605.5 nm in Pr :KYF 4 [12]. However, it is worthwhile to mention that the reabsorption into the 1 D 2 energy level at the orange emission in Pr 3 -doped laser materials is a special challenge for achieving efficient laser output compared with other emissions, such as deep red…”