PAD Spectrometer Based on Wide Tunable Optical Parametric Oscillator for Noninvasive Medical Diagnostics

作     者：D. B. Kolker I. V. Sherstov A. I. Karapuzikov A. A. Karapuzikov A. A. Boyko M. K.Starikova N. Yu. Dukhovnikova V. N. Loconov M. Yu. Shtyrov I. B. Miroshnichenko K. G. Zenov M. B. Miroshnichenko 

作者机构：1Novosibirsk State Technical University 2Special Technology LTD 1Novosibirsk State Technical University 2Special Technology LTD 3OKTAVA LTD OKTAVA LTD Special Technology LTD 

出 版 物：《Optics and Photonics Journal》 (光学与光子学期刊（英文）)

年 卷 期：2013年第3卷第2期

页      面：43-46页

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

主　　题：Optical Parametric Oscillator Nonlinear Optical Crystals Silver Thiogallate Fun – out PPLN Photo - Acoustic Spectroscopy Absorption Spectrum 

摘      要：The gas analyzer based on optical parametric oscillators (OPO) and laser photo - acoustic spectroscopy is demonstrated. The optical parametric oscillators based on fun – out PPLN and bulk crystal AgGaS2 with a two-pass pumping are developed. Wide tunable OPO is pumped by compact nanosecond Nd: YLF laser. Pulse duration is 5 - 7 ns, maximum pulse energy is 1.5 mJ at a frequency of 100-2000 Hz. OPO lasing threshold is 10 - 16 mJ/cm2 at the spectral range 2.2 - 4 μm for fun – out PPLN OPO and 12 - 20 mJ/cm2 at the spectral range 4 - 7.5 μm for AgGaS2 OPO. Absorption spectra of gaseous mixtures (CH4, C3H8, C2H6, C2H4 and CO2) and human’s breath were studied.