Terahertz generation by difference frequency conversion of two single-frequency VECSELs in an external resonance cavity

被引：1
|
作者：
Scheller, Maik [1 ,2 ]
Paul, Justin R. [1 ,2 ]
Laurain, Alexandre [2 ]
Young, Abram [3 ,4 ]
Koch, Stephan W. [1 ,5 ]
Moloney, Jerome V. [1 ,2 ]
机构：
[1] Beam Technol LLC, 3542 N Geronimo Ave, Tucson, AZ 85705 USA
[2] Univ Arizona, Coll Opt Sci, Tucson, AZ USA
[3] TeraVis Inc, Tucson, AZ 85705 USA
[4] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA
[5] Philipps Univ Marburg, Fac Phys, Marburg, Germany
来源：
VERTICAL EXTERNAL CAVITY SURFACE EMITTING LASERS (VECSELS) IV | 2014年 / 8966卷
关键词：
VECSEL; terahertz; high power; single-frequency; frequency conversion; nonlinear optics; EMITTING LASERS; HIGH-POWER; STABILIZATION; SPECTROSCOPY; PHASE;
D O I：
10.1117/12.2040399
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We demonstrate a continuous wave, single frequency terahertz (THz) source based on parametric difference frequency generation within a nonlinear crystal located in an optical enhancement cavity. Two single-frequency VECSELs with emission wavelengths spaced by 6.8 nm are phase locked to the external cavity and are used as pump sources for the nonlinear down conversion. The emitting THz radiation is centered at 1.9 THz and has a linewidth of less than 100 kHz. The output power of the source exceeds 100 mu W. We show that the THz source can be used as local oscillator to drive a receiver used in astronomy applications.
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页数：6
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