A. Suda, Wang Pengqian, Koprinkov Ivan G., and K. Midorikawa, "Self-compression of femtosecond laser pulses," Reports on Topical Meeting of the Laser Society of Japan, New Laser, no. 99, pp. 13-17, 1999(in Japanese).

K. Midorikawa, Y. Tamaki, J. Itatani, Y. Nagata, and M. Obara, "Phase-matched high-order harmonic generation by guided intense femtosecond pulses," Inst. Phys. Conf. Ser., pp. 515-521, 1999.

K. Obata, K. Sugioka, H. Takai, and K. Midorikawa, "TiN growth on Si(100) by pulsed laser deposition using homogenized KrF excimer laser beam," Appl. Surf. Sci., vol. 138/139, pp. 335-339, 1999.

K. Midorikawa, Y. Tamaki, J. Itatani, Y. Nagata, and M. Obara, "Phase-matched high-order harmonic generation by guided intense femtosecond pulses," IEEE J. Selected Topics in Quantum Electronics, vol. 5, pp. 1475-1485, 1999.

Ilev Ilko Kolev, Waynant Ronald W., H. Kumagai, and K. Midorikawa, "Double-pass fiber Raman laser: A powerful and widely tunable in the ultraviolet, visible, and near-infrared fiber Raman laser for biomedical investigations," IEEE J. Selected Topics in Quantum Electronics, vol. 5, pp. 1013-1018, 1999.

Cho Sung-Hak, H. Kumagai, K. Midorikawa, and M. Obara, "Fabrication study of double cladding structure in optical fibers using plasma channeling induced by a femtosecond laser," Proc. SPIE-Int. Soc. Opt. Eng., vol. 3885, pp. 293-302, 1999.

K. Sugioka, Zhang Jie, and K. Midorikawa, "Hybrid laser processing for micromachining for hard materials," Proc. SPIE-Int. Soc. Opt. Eng., vol. 3822, pp. 6-17, 1999.

Zhang Jie, K. Sugioka, K. Midorikawa, J. J. Dubowski, H. Helvajian, and E. W. Kreutz, "Micromachining of glass materials by laser-induced plasma-assisted ablation (LIPAA) using a conventional nanosecond laser," Proc. SPIE-Int. Soc. Opt. Eng., vol. 3618, pp. 363-369, 1999.

K. Midorikawa, Y. Tamaki, J. Itatani, and M. Obara, "Phase-matched high-order-harmonic generation by self-guided intense femtosecond laser pulses," Proc. SPIE-Int. Soc. Opt. Eng., vol. 3776, pp. 135-142, 1999.

Maya Oki, Y. Nagata, M. Obara, Y. Aoyagi, and K. Midorikawa, "Ultra-high gain Ni-like Kr soft x-ray laser by optical field ionization initiated transient collisional excitation scheme," Proc. SPIE-Int. Soc. Opt. Eng., vol. 3776, pp. 143-149, 1999.

Koprinkov Ivan G., A. Suda, Wang Pengqian, and K. Midorikawa, "Self-shortning of femtosecond laser pulses propagating in rare gas medium," Oyo Buturi, vol. 68, p. 1289, 1999(in Japanese).

Y. Tamaki, T. Itatani, Y. Nagata, M. Obara, and K. Midorikawa, "Highly-efficient, phase-matched high-harmonic generation by a self-guided laser beam," Phys. Rev. Lett., vol. 82, pp. 1422-1425, 1999.

Nguyen Hong Shon, A. Suda, and K. Midorikawa, "Generation and propagation of attosecond pulses in He gas with sub-10-fs driver pulses," Phys. Rev. A, vol. 60, pp. 2587-2590, 1999.

Y. Tamaki, Y. Nagata, M. Obara, and K. Midorikawa, "Phase-matched high-order-harmonic generation in a gas-filled hollow fiber," Phys. Rev. A, vol. 59, pp. 4041-4044, 1999.

T. Akane, M. Sano, H. Okumura, Y. Tsubo, T. Ishikawa, and S. Matsumoto, "Characterization of gas-source molecular beam epitaxial growth of strain-compensated Si_1-x-yGe_xC_y/Si(001) heterostructure," J. Cryst. Growth, vol. 203, pp. 80-86, 1999.

Koprinkov Ivan G., A. Suda, Wang Pengqian, and K. Midorikawa, "High-energy conversion efficiency of transient stimulated Raman scattering in methane pumped by the fundamental of a femtosecond Ti:sapphire laser," Opt. Lett., vol. 24, pp. 1308-1310, 1999.

T. Kawachi, K. Ando, C. Fujikawa, H. Oyama, N. Yamaguchi, T. Hara, and Y. Aoyagi, "Observation of excited level populations of Li-like aluminium ions in recombining plasma:Role of atomic processes involving doubly excited levels of Be-like ions," J. Phys. B, vol. 32, pp. 553-562, 1999.

Cho Sung-Hak, H. Kumagai, K. Midorikawa, and M. Obara, "Fabrication of double cladding structure in optical multimode fibers using plasma channeling excited by a high-intensity femtosecond laser," Opt. Commun., vol. 168, pp. 287-295, 1999.

A. Suda, A. Kadoi, K. Nagasaka, H. Tashiro, and K. Midorikawa, "Absorption and oscillation characteristics of a pulsed Cr⁴⁺: YAG laser investigated by a double-pulse pumping technique," IEEE J. Quantum Electron., vol. 35, pp. 1548-1553, 1999.

T. Akane, K. Sugioka, H. Ogino, H. Takai, and K. Midorikawa, "KrF excimer laser induced ablation-planarization of GaN surface," Appl. Surf. Sci., vol. 148, pp. 133-136, 1999.

Nguyen Hong Shon, A. Suda, and K. Midorikawa, "Attosecond pulse generation in He gas with few-cycle KrF driver pulses," Jpn. J. Appl. Phys. Pt.1, vol. 38, pp. 6298-6301, 1999.

Koprinkov Ivan G., A. Suda, Wang Pengqian, and K. Midorikawa, "Self-shortening of femtosecond laser pulses propagating in rare gas medium," Jpn. J. Appl. Phys. Pt.2, vol. 38, pp. L978-L980, 1999.

T. Akane, K. Sugioka, and K. Midorikawa, "High-speed etching of hexagonal GaN by laser ablation and successive chemical treatment," Appl. Phys. A, vol. 69, pp. S309-S313, 1999.

K. Obata, K. Sugioka, K. Toyoda, H. Takai, and K. Midorikawa, "TiN growth on Si by hybrid radical beam PLD," Appl. Phys. A, vol. 69, pp. S715-S718, 1999.

Zhang Jie, K. Sugioka, and K. Midorikawa, "High-quality and high-efficiency machining of glass materials by laser-induced plasma-assisted ablation using conventional nanosecond UV, visible, and infrared lasers," Appl. Phys. A, vol. 69, pp. S879-S882, 1999.

K. Furusawa, K. Takahasi, H. Kumagai, K. Midorikawa, and M. Obara, "Ablation characteristics of Au, Ag, and Cu metals using a femtosecond Ti:sapphire laser," Appl. Phys. A, vol. 69, pp. S359-S366, 1999.