使用高功率垂直外腔面发射激光器（VECSELs）的腔内低温光制冷。

Intra-cavity cryogenic optical refrigeration using high power vertical external-cavity surface-emitting lasers (VECSELs).

作者信息

Ghasemkhani Mohammadreza, Albrecht Alexander R, Melgaard Seth D, Seletskiy Denis V, Cederberg Jeffrey G, Sheik-Bahae Mansoor

出版信息

Opt Express. 2014 Jun 30;22(13):16232-40. doi: 10.1364/OE.22.016232.

DOI:10.1364/OE.22.016232

PMID:24977874

Abstract

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.

摘要

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。