Vernier frequency sampling: a new tuning approach in spectroscopy-application to multi-wavelength integrated path DIAL

被引：20

作者：

Hardy, B. ^{[2
]}

Raybaut, M. ^{[1
,2
]}

Dherbecourt, J. B. ^{[2
]}

Melkonian, J. M. ^{[2
]}

Godard, A. ^{[2
]}

Mohamed, A. K. ^{[2
]}

Lefebvre, M. ^{[2
]}

机构：

[1] ONERA DMPH, F-91761 Palaiseau, France

[2] ONERA French Aerosp Lab, F-91761 Palaiseau, France

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2012年 / 107卷 / 03期

关键词：

This work was partially supported by grants from Région Île-de-France;

D O I：

10.1007/s00340-012-5039-0

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present novel frequency tuning methods for broadband mid-infrared spectroscopy that take advantage of the unique frequency sampling properties of our recently developed "nested dual-cavity doubly resonant optical parametric oscillator" (NesCOPO). These methods, referred to as Vernier frequency sampling, enable mode-hop tuning with an adjustable virtual-cavity intermode spacing. Both frequency resolution and span are widely adjustable and can be tailored to fulfill the requirements either for broadband spectroscopy (> 50 cm(-1) spectral coverage) at low resolution or for high resolution (< 0.01 cm(-1)) narrow band spectroscopy. The technique is applied to short-range (10 to 30 m) atmospheric CO2 measurements at 4.2 A mu m using integrated path differential absorption LIDAR.

引用

页码：643 / 647

页数：5

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