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Volume 23, Issue 10
Displaying 1-10 of 10 articles from this issue
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Takao KOBAYASHI1995 Volume 23 Issue 10 Pages 813
Published: November 07, 1995
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSDownload PDF (137K) -
Kiyoshi YAMAGISHI, Takafumi YAMAZAKI1995 Volume 23 Issue 10 Pages 814-821
Published: November 07, 1995
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSTunable solid-state lasers have been playing an important role in opto-electronics technology in recent years. In this article, we review the fundamental characteristics of transition metal ion-doped laser materials and their performance as laser media. Further emphases are put on the valence state stability of each transition metal ion in some typical crystals.View full abstractDownload PDF (901K) -
Takao IZAWA, Nobuhiko SARUKURA1995 Volume 23 Issue 10 Pages 822-827
Published: November 07, 1995
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSVarious kinds of widely tunable solid-state lasers and optical parametric oscillators have been developed, but the tuning region is limited by the bandwidth of the coatings rather than the potential tuning region of the laser material itself. Recently, however, breakthroughs in the coating technologies have been overcoming these problems. For example, cw operation over the entire tuning region (over 400 nm) of a CW Ti: sapphire laser has been demonstrated using a new broad-band, low-loss mirror set.View full abstractDownload PDF (643K) -
Mitsuo MAEDA, Tatsuo OKADA, Yuji OKI1995 Volume 23 Issue 10 Pages 828-837
Published: November 07, 1995
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSTi: sapphire laser is one of the most promissing solid-state tunable lasers for spectroscopic application. At first, the fundamental characteristics of a pulsed Ti: sapphire laser with an amplifier are analyzed and compared with experiments. A guide line to design a widely tunable high-power Ti: sapphire laser is shown. Next, various nonlinear optical methods to expand the tunable range are reviewed including higher harmonic generation, optical mixing and stimulated Raman scattering. Very wide continuous tunable range from VUV to IR can be obtained by the aid of Raman shifting.View full abstractDownload PDF (1039K) -
WangLong ZHOU, Takatomo SASAKI1995 Volume 23 Issue 10 Pages 838-845
Published: November 07, 1995
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSThe Ti: sapphire laser has been rapidly developed and is the most succeeded one among the tunable solid-state lasers. It is tunable from 660 nm to 968 nm and this range can be further extended to blue and ultraviolet regions through wavelength conversion by using nonlinear optical crystals. This paper reviews high-efficiency external resonant and intracavity frequency doubling for cw Ti: sapphire lasers.View full abstractDownload PDF (905K) -
Kenzo MIYAZAKI1995 Volume 23 Issue 10 Pages 846-857
Published: November 07, 1995
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSRecent developments of laser technology have made it possible to produce light intensities of 1015-1018 W/cm2, where the high-frequency radiation field becomes comparable to or in excess of the typical atomic Coulomb field. This paper describes the generation of high- intensity femtosecond laser pulses based on tunable solid-state lasers and reviews typical highfield phenomena such as optical-field induced ionization (OFI) of atoms, high-order harmonic generation in atomic gases, and x-ray lasers using OFI processes.View full abstractDownload PDF (1490K) -
Kiyoji UEHARA1995 Volume 23 Issue 10 Pages 858-863
Published: November 07, 1995
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSA Ti: sapphire laser is indispensably useful for spectroscopy owing to its broad tuning range, high power, narrow linewidth, and simple maintenance. Spectroscopy experiments of atoms and molecules with Ti: sapphire lasers are reviewed with emphasis on high-resolution spectroscopy.View full abstractDownload PDF (680K) -
Noboru TAGUCHI, Masahiro IHARA, Masaki TSUNEKANE, Kin Pui CHAN, B. DEV ...1995 Volume 23 Issue 10 Pages 864-873
Published: November 07, 1995
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSRecent interest in biomedical imagings using lasers has been spurred by the need of nonionizing medical imaging diagnostics. Tunable solid-state lasers are well suited for spectroscopic measurements and imaging of biological tissues, which are expected to provide functional information of the samples. This paper summarizes our recent development of a laser-diode pumped, single-frequency CW Cr: LiSAF laser which has been demonstrated to be tunable over a wide range of 150 nm near the wavelength of 875 nm. By reviewing our recent progresss of optical imaging and computed tomography of tissues and tissue-like phantoms, we show some of the potential applications of the tunable solid-state lasers.View full abstractDownload PDF (1257K) -
Isamu AKASAKI, Hiroshi AMANO1995 Volume 23 Issue 10 Pages 874-879
Published: November 07, 1995
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSRecently, group III nitride-based high-brightness blue light emitting diodes (LEDs) have been commercially available, and blue-green laser diodes (LDs) based on II-IV compounds have also been demonstrated. Fundamental findings which lead to the recent developments of the II-VI based blue-green LD and the group III nitride- based blue light emitting diode are reviewed.View full abstractDownload PDF (734K) -
Akira INOUE1995 Volume 23 Issue 10 Pages 880-889
Published: November 07, 1995
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSA fiber Bragg grating, with periodical perturbation of the refractive index in the fiber core, is a very attractive optical device. The fiber Bragg grating functions as a wavelength selective reflection filter in an optical line. Because of its excellent optical properties and easy integration into fiber optic systems, the fiber Bragg grating is expected to find many applications. In this article, the mechanism of refractive index changes in the fiber core, fiber Bragg grating fabrication techniques and some applications of fiber Bragg grating are described.View full abstractDownload PDF (968K)
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