[1] Voraberger H, Ribitsch V, Janotta M, et al. Application of mid-infrared spectroscopy: Measuring hydrogen peroxide concentrations in bleaching baths [J]. Appl. Spectr., 2003, 57(5): 574-579.
[2] Sigrist M W. Mobile laser spectrometer with novel resonant multi pass photo acoustic cell for trace-gas sensing [J]. Appl. Phys. B, 2000, 70(6): 895-901.
[3] Weibring P, Richter D, Fried A, et al. Ultra-high-precision mid-IR spectrometer II: system description and spectroscopic performance [J]. Appl. Phys. B, 2006, 85(2): 207-218.
[4] Seiter M, Sigrist M W. Compact gas sensor using a pulsed difference frequency laser spectrometer [J]. Opt. Lett., 1999, 24: 110-112.
[5] Petrov K P, Curl R F. Compact laser difference-frequency spectrometer for multi-component trace gas detection [J]. Appl. Phys. B, 1998, 66: 531-538.
[6] Bawendi M G, Rehfuss B D, Oka T. Laboratory observation of hot bands of H3(+) [J]. J. Chem. Phys., 1990, 93(9): 6200-6300.
[9] Chang Jianhua, Mao Qinghe. Widely tunable mid-IR difference-frequency generation based on fiber lasers [J]. Opt. Lett., 2010, 35(20): 3486-3488.
[11] Barnes W L, Laming R I, Tarbox E J, et al. Absorption and emission cross section of Er doped silica fibers [J]. IEEE J. Quant. Electron., 1991, 27(4): 1004-1010.