A 3.5-mW continuous-wave difference-frequency source around 3 μm for sub-Doppler molecular spectroscopy

被引：56
作者：
Maddaloni, P [1 ]
Gagliardi, G [1 ]
Malara, P [1 ]
De Natale, P [1 ]
机构：
[1] Ist Nazl Ott Applicata Comprensorio A Olivetti, I-80078 Naples, Italy
来源：
APPLIED PHYSICS B-LASERS AND OPTICS | 2005年 / 80卷 / 02期
关键词：
D O I：
10.1007/s00340-004-1714-0
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report the development of a mid-infrared tunable coherent radiation source, based on difference-frequency generation (DFG). The signal and pump beams coming from two cw rare-earth-doped amplifiers are mixed into a periodically-poled LiNbO3 crystal to produce radiation in the 2.9 - 3.5 mum spectral range. For the first time to our knowledge, an output power of several mW has been achieved. We show that such a power can be exploited for high-resolution investigation of molecular absorption spectra. Saturation Lamb-dips have been observed for a number of ro-vibrational transitions belonging to the CH4 nu(3) fundamental band.
引用
收藏
页码：141 / 145
页数：5
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