MEASUREMENT OF (CO2)-C-12(CO2)-C-13 RATIOS FOR MEDICAL DIAGNOSTICS WITH 1.6-MU-M DISTRIBUTED-FEEDBACK SEMICONDUCTOR DIODE-LASERS

被引：46

作者：

COOPER, DE ^{[1
]}

MARTINELLI, RU ^{[1
]}

CARLISLE, CB ^{[1
]}

RIRIS, H ^{[1
]}

BOUR, DB ^{[1
]}

MENNA, RJ ^{[1
]}

机构：

[1] DAVID SARNOFF RES CTR, PRINCETON, NJ 08543 USA

来源：

APPLIED OPTICS | 1993年 / 32卷 / 33期

关键词：

D O I：

10.1364/AO.32.006727

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have observed some of the absorption lines from the molecules (CO2)-C-12 and (CO2)-C-13 in the 1.6-mu m spectral region with the use of specially fabricated single-mode InGaAsP distributed-feedback semiconductor diode lasers. Using a 23.6-m-long multipass absorption cell in combination with radio-frequency modulation and detection techniques, we measured the (CO2)-C-12:(CO2)-C-13 isotopic ratio of two specific lines at 6253.73 and 6253.90 cm(-1) with sufficient precision for diagnostic medical tests that analyze CO2 on human breath.

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页码：6727 / 6731

页数：5

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