Ghasemkhani Mohammadreza, Albrecht Alexander R, Melgaard Seth D, Seletskiy Denis V, Cederberg Jeffrey G, Sheik-Bahae Mansoor
Opt Express. 2014 Jun 30;22(13):16232-40. doi: 10.1364/OE.22.016232.
A 7% Yb:YLF crystal is laser cooled to 131 ± 1 K from room temperature by placing it inside the external cavity of a high power InGaAs/GaAs VECSEL operating at 1020 nm with 0.15 nm linewidth. This is the lowest temperature achieved in the intracavity geometry to date and presents major progress towards realizing an all-solid-state compact optical cryocooler.
通过将一块7%的镱镱锂氟化物（Yb:YLF）晶体置于输出波长为1020 nm、线宽为0.15 nm的高功率砷化铟镓/砷化镓垂直外腔面发射激光器（InGaAs/GaAs VECSEL）的外腔中，该晶体从室温被激光冷却至131±1K。这是迄今为止腔内几何结构所能达到的最低温度，朝着实现全固态紧凑型光学制冷器迈出了重要一步。
