Calorimetric measurement of two-photon absorption and color-center formation in ultraviolet-window materials

Intensity-dependent absorption of 25 ns excimer laser pulses in common UV-window materials was investigated. By employing a calorimetric technique which provides greatly enhanced sensitivity compared to transmissive measurements, two-photon absorption coefficients were determined at intensities of 2–80 MW/cm2 and found to be in good agreement with previous measurements at 10–100 GW/cm2. Also, color-center formation in fused silica was observed. It was possible to quantify transient and cumulative effects as a function of intensity.

[1]  L. Skolnik.  A Review of Techniques for Measuring Small Optical Losses in Infrared Transmitting Materials , 1975 .

[2]  Haim Lotem,et al.  Absolute two-photon absorption coefficients at 355 and 266 nm , 1978 .

[3]  Kurt E. Leopold,et al.  Dependence of the nonlinear transmission properties of fused silica fibers on excimer laser wavelength , 1989 .

[4]  A. Tam,et al.  Transient absorption and fluorescence spectroscopy in fused silica induced by pulsed KrF excimer laser irradiation , 1991 .

[5]  T. Tomie,et al.  Three‐photon absorption in CaF2 at 248.5 nm , 1989 .

[6]  Hideo Hosono,et al.  Two‐photon processes in defect formation by excimer lasers in synthetic silica glass , 1988 .

[7]  K. Hata,et al.  Nonlinear processes in UV optical materials at 248 nm , 1990 .

[8]  Maria Goeppert-Mayer.  Über Elementarakte mit zwei Quantensprüngen , 1931 .

[9]  Alan F. Stewart,et al.  Laser calorimetric measurement of two photon absorption , 1979 .

[10]  P. Simon,et al.  Intensity-dependent loss properties of window materials at 248 nm. , 1989, Optics letters.

[11]  Wing P. Leung,et al.  Effect of intense and prolonged 248 nm pulsed‐laser irradiation on the properties of ultraviolet‐grade fused silica , 1991 .

[12]  Detlev Ristau,et al.  Absorption calorimetry and laser-induced damage threshold measurements of antireflective-coated ZnSe and metal mirrors at 10.6 μm , 1991, Laser Damage.

[13]  Bernard Bendow,et al.  Optical Properties of Highly Transparent Solids , 1975 .

[14]  E. Bassous,et al.  Transmission, photoconductivity, and the experimental band gap of thermally grown SiO 2 films , 1979 .

[15]  A Hordvik,et al.  Measurement techniques for small absorption coefficients: recent advances. , 1977, Applied optics.

[16]  Tsai,et al.  Mechanism of intrinsic Si E'-center photogeneration in high-purity silica. , 1988, Physical review letters.

[17]  Klaus R. Mann,et al.  Damage threshold measurements using femtosecond excimer laser , 1993, Laser Damage.

[18]  R. Dreyfus,et al.  From Laser-Induced Desorption to Surface Damage , 1989 .

[19]  A C Tam,et al.  Sudden onset of strong absorption followed by forced recovery in KrF laser-irradiated fused silica. , 1993, Optics letters.

[20]  M. Hutchinson,et al.  Intensity-induced nonlinear effects in UV window materials , 1989 .

[21]  Gary C. Escher.  KrF Laser Induced Color Centers In Commercial Fused Silicas , 1988, Other Conferences.

[22]  Juergen Wolfrum,et al.  Luminescence and transient absorption bands in fused SiO2 induced by KrF laser radiation at various temperatures , 1992 .

[23]  D. C. Shaver,et al.  Effects of excimer laser irradiation on the transmission, index of refraction, and density of ultraviolet grade fused silica , 1989 .

[24]  P. A. Temple,et al.  Experimental And Theoretical Considerations In Thin-Film Laser Calorimetry , 1984 .

[25]  A. Taylor,et al.  Two-photon absorption at 248 nm in ultraviolet window materials. , 1988, Optics letters.