巻号一覧
23 巻, 12 号
選択された号の論文の13件中1～13を表示しています
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田中 昭洋1995 年 23 巻 12 号 p. 1025-1026
発行日: 1995/12/28
公開日: 2010/02/26
ジャーナル フリーPDF形式でダウンロード (147K) -
前田 三男1995 年 23 巻 12 号 p. 1027-1037
発行日: 1995/12/28
公開日: 2010/02/26
ジャーナル フリーExcimer lasers and excimer lamps provided efficient and high-power UV sources for applications of laser-induced chemistry and laser processing. After the emission mechanism of excimers and the spectroscopy of excimers were briefly reviewed, excitation methods and system constructions of excimer lasers were described. Especially for discharge-pumped rare-gas halide excimer lasers, detaild description of laser system, gas treatment and simulation analysis was made.抄録全体を表示PDF形式でダウンロード (1255K) -
永井 治彦1995 年 23 巻 12 号 p. 1038-1050
発行日: 1995/12/28
公開日: 2010/02/26
ジャーナル フリーExcimer lasers and its applications of wide scope are reviewed. Emphasis is placed on the industrial applications from the point of practical uses.
Processsing equipments using excimer lasers and various material processsings such as drilling, cutting and marking based on the ablation principle, optical lithography, annealing, surface modification, thin film preparation, medical applications, and applications using F2 laser are described. Recent results of the Japanese national AMMTRA project are also reviewed.抄録全体を表示PDF形式でダウンロード (1853K) -
五十嵐 龍志1995 年 23 巻 12 号 p. 1051-1055
発行日: 1995/12/28
公開日: 2010/02/26
ジャーナル フリーNew ultraviolet and vacuum ultraviolet excimer lamps driven by barrier discharge are reviewed. Ar, Kr, Xe, KrCl and XeCl excimer lamps were developed, whose emission wave lengths are 126, 146, 172, 222, and 308nm, respectively. These spectra have full width at half maximum (FWHM) as narrow as 2 to 14 nm. An efficiency of 10% was obtained with a Xe excimer lamp. The principle, structure and application of lamps are described.抄録全体を表示PDF形式でダウンロード (543K) -
佐々木 亘1995 年 23 巻 12 号 p. 1056-1067
発行日: 1995/12/28
公開日: 2010/02/26
ジャーナル フリーNew excimer sources in VUV spectral region have been reviewed in this paper, where rare gas excimers and ionic alkali halide excimers were focused on. Electron beam pumped rare gas excimer lasers were developed as coherent light sources. Their applications to materials processing were explored in detail. Rare gas jet excimer lamps and silent discharge excimer lamps were discussed as incoherent light sources. Ionic alkali halide excimers excited by a laser-produced plasma were also discussed. Possible applications of VUV excimer light were presented.抄録全体を表示PDF形式でダウンロード (755K) -
プルトニウムとネプツニウムの光溶液化学反応及び二酸化ウランの光化学溶解和田 幸男, 富安 博1995 年 23 巻 12 号 p. 1068-1080
発行日: 1995/12/28
公開日: 2010/02/26
ジャーナル フリーThe photochemical reaction mechanisms of Pu and Np dissolved in a nitric acid solution and features of their reactions are described based on our experimental data obtained by the irradiation of UV light using a Hg lamp. The suitable valences of Pu and Np for the separation and coextraction were adjusted to the conditions of Pu (IV, VI) -Np (V) and Pu (IV, VI) -Np (VI), respectively, using the photochemical reactions. The separation and coextraction of Np from/with Pu were carried out by the solvent extraction using 30% TBP/n-dodecane after/during the photochemical valence adjustment. As for the other application technique of the photochemical reaction, the photochemical dissolution technique using the strong oxidative ability of the nitric acid species photochemically excited was also described.抄録全体を表示PDF形式でダウンロード (532K) -
宮本 勇, 林 秀明1995 年 23 巻 12 号 p. 1081-1089
発行日: 1995/12/28
公開日: 2010/02/26
ジャーナル フリーRemoval process of thin Cu film deposited on PMMA substrate by excimer laser was analyzed on the basis of thermal conduction theory and high speed photographing. At optimized laser fluences, the film was removed mainly in the liquid state. The film was then heated up to the temperatures just below the boiling point of Cu, was accelerated towards the center of the irradiated zone by the surface tension acting at the edge of the molten zone, and was eventually broken into small droplets to fly radially away outwards by the inertia of the molten metal. At excess fluences, the increased recoil force pressed the molten film to provide radialmolten metal flow. Then the radial flow expanded the removed region, and eventually peeled the surrounding film. The peeling was prevented by using a substrate having higher adhesion to the Cu film.抄録全体を表示PDF形式でダウンロード (1390K) -
E.V. SLOBODCHIKOV, Jangseok MA, Keitaro YOSHIHARA1995 年 23 巻 12 号 p. 1090-1095
発行日: 1995/12/28
公開日: 2010/02/26
ジャーナル フリーWe report the amplification of a Kerr-lens mode-locking cavity-dumped frequency-doubled chromium-doped forsterite laser in a six-pass bow-tie dye amplifier pumped by a diodepumped Q-switched frequency-doubled Nd: YLF laser. This system generates the energy of 0.6μJ per pulse and a pulse duration as short as 43 fs (FWHM) at the wavelength of 630 nm with a repetition rate of 4 kHz. The amplified pulses were used to generate a continuum in a fused silica plate.抄録全体を表示PDF形式でダウンロード (641K) -
酒井 哲弥, 姫野 邦治, 和田 朗, 山内 良三1995 年 23 巻 12 号 p. 1096-1102
発行日: 1995/12/28
公開日: 2010/02/26
ジャーナル フリーA polarization-maintaining erbium-doped fiber (PM-EDF) based on the PANDA (Polarization-maintaining AND Absorption-reducing) type fiber technology has been developed as an amplification medium of a polarization-maintaining optical amplifier for 1550 nm band. Detail amplification and polarization characteristics of the PM-EDF have been evaluated for the first time. The carefully designed PM-EDF amplifies the optical signal with a high gain and low noise figure, keeping the state of polarization through the fiber. The amplification performance of the newly developed PM-EDF is the same as that of the conventional erbium doped amplifiers except the polarization characteristics. The achieved characteristics are 35 dB gain for small signal, 4.8 dB noise figure, 70% slope efficiency, 30 dB of polarization extinction ratio even in a fiber coil of 15 mm in diameter. Polarization hole burning is also reported.抄録全体を表示PDF形式でダウンロード (795K) -
横沢 剛, 原 煕1995 年 23 巻 12 号 p. 1103-1112
発行日: 1995/12/28
公開日: 2010/02/26
ジャーナル フリーWe have studied the lasing characteristics of a Tm: YAG laser pumped by a laser diode. The maximum output power of 157 mW and a slope efficiency of 44 % were achieved for a 3% Tm: YAG laser crystal at a crystal temperature of -10°C. A small signal gain and a saturation parameter of the 3% Tm: YAG laser were calculated by using the output power as a function of the reflectivity of a coupling mirror. The lasing spectrum shifted towerd short wavelengths from 2.01 mm and the width of the lasing spectrum decreased with decreasing temperature.抄録全体を表示PDF形式でダウンロード (1128K) -
十文字 正憲, 内山 晴夫1995 年 23 巻 12 号 p. 1113-1123
発行日: 1995/12/28
公開日: 2010/02/26
ジャーナル フリーSince dye lasers are very widely tunable from near ultra-violet to near infrared, so that it had been used in high resolution spectroscopy and many other applications. A linear flashlamppumped dye laser is very useful for its low cost and high output power or high energy, as well as a good beam quality and sharp tunability. However, several flashlamps are required for excitation in order to obtain an output energy over several joules. We have achieved a dye laser output of 18 J with a single flashlamp, by employing a multi-stage Marx-bank driver and optimizing the output mirror reflectivity as well as by choosing appropiate dye cell size and the dye concentration.抄録全体を表示PDF形式でダウンロード (613K) -
村上 文夫, 大村 陽一, 林 真史, 大田 建久1995 年 23 巻 12 号 p. 1124-1130
発行日: 1995/12/28
公開日: 2010/02/26
ジャーナル フリーLaser Doppler vibrometer was built by using a two-mode stabilized He-Ne laser. The laser supports two orthogonally-polarized axial-modes which generate an inter-mode beat frequency of 724 MHz. These two modes serve as sensing and reference light. To detect instantaneous Doppler frequency shift, a novel demodulation scheme was proposed. The frequency shift is detected by a delayed self-homodyne technique. The delay is provided via an optical fiber. The performance of the demodulator was investigated theoretically and experimentally.抄録全体を表示PDF形式でダウンロード (311K) -
周 駿1995 年 23 巻 12 号 p. 1131-1135
発行日: 1995/12/28
公開日: 2010/02/26
ジャーナル フリーA new method has been developed for pulse squeezed light generation in parametric process by using low repetition pulse laser. With this new technique, it becomes very easy to realize the condition for obtaining substantial squeezing, i. e. the damping constant for pump field should be much smaller than that for the parametric signal field. This condition, however, was difficult to be realized with conventional experimental setup by using low repetition pulse laser. Semiclassical approach indicates that deep degree squeezing may be obtained over a wide frequency range by increasing the ratio of the dumping constant for signal field to that for the pump field in the new experimental setup. At the same time, the conversion efficiency of the second-harmonic generation can also be increased remarkably by this new method in the squeezed light generation process.抄録全体を表示PDF形式でダウンロード (223K)
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