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

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

1Novosibirsk State Technical University 2Special Technology LTD.
1Novosibirsk State Technical University 2Special Technology LTD 3OKTAVA LTD.
OKTAVA LTD.
Special Technology LTD.

DOI: 10.4236/opj.2013.32B010                

Abstract

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.

Keywords

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

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	F. J. M. Harren, G. Cotti, J. Oomens and S. L. Hekkert, “Photoacoustic Spectroscopy in Trace Gas Monitoring,” Encyclopedia of Analytical Chemistry, 2000, pp. 2203-2226.
[2]	A. Miklos, P. Hess and Z. Bozoki, “Application of acoustic resonators in photoacoustic trace gas analysis and metrology,” Review of Scientific Instruments, No. 72 , 2001, pp. 1937-1955
[3]	Yu. N. Ponomarev, I. V. Sherstov and V. A. Vasiliev, “High-Sensitivity Laser Photoacoustic Leak Detector,” Optical Engineering, Vol. 46, No. 6, 2007, p. 064302. doi:10.1117/1.2748042
[4]	A. Miklos, C.-H. Lim, W.-W. Hsiang, G.-Ch. Liang, A. H. Kung, A. Schmohl and P. Hess, “Photoacoustic measurement of methane concentrations with a compact pulsed optical parametric oscillator,” Applied Optics, No. 15, 2002, Vol. 41, pp. 2985-2993.
[5]	I.V. Sherstov, A.I.Karapuzikov, V.A.Vasiljev, K.G. Zenov, “Research of metrological parameters of SF6 laser photoacoustic detector”, In: XV International Symposium “Atmospheric and Ocean Optics. Atmospheric Physics,” Krasnoyarsk, June 22-28, 2008, p. 108.
[6]	D. A. Kashtanov, V. A. Vasil’ev, A. I. Karapuzikov and I. V. Sherstov. “The stabilization emission line of waveguide CO2 laser for laser photoacoustic detector SF6,” Atmospheric and Oceanic Optics, Vol. 24, No. 6, 2011, pp. 411-424.
[7]	G. Marchev, A. Tyazhev, V. Vedenyapin, D. Kolker and А. Yelisseyev. “Nd:YAG pumped nanosecond optical parametric oscillator based on LiInSe2 with tunability extending from 4.7 to 8.7 μm” Optics Express, 2009, Vol. 17, No. 16, pp. 13441-13446.
[8]	V. Petrov, J.-J. Zondy, O. Bidault, L. Isaenko, V. Vedenyapin, А. Yelisseyev, W. Chen, A. Tyazhev, S. Lobanov, G. Marchev and D. Kolker, Optical, thermal, electrical, damage, and phase-matching properties of lithium selenoindate //JOSA B, 2010, Vol. 27, No. 9, pp. 1902-1927.
[9]	D. B. Kolker, R.V. Pustovalova, M. K. Starikova, A. I. Karapuzikov, A. A. Karapuzikov, O. M. Kuznetsov and Yu. V. Kistenev, “Optical parametric oscillator within 2.4 - 4.3 μm pumped with a nanosecond Nd:YAG laser,” Atmospheric and Oceanic Optics, 2012, Vol. 25, No. 1, pp. 77-81.doi:10.1134/S1024856012010071