Main references

1. T. Saiki, K. Imasaki, S. Motokoshi, and C. Yamanaka, H. Fujita, M. Nakatsuka, and Y. Izawa, ” Disk-type Nd/Cr:YAG ceramic lasers pumped by arc-metal-halide-lamp”, Opt. Comm. 268 (2006) pp.155-159.

2. T. Saiki, S. Motokoshi, K. Imasaki, H. Fujita, M. Nakatsuka and C. Yamanaka, " Nd/Cr:YAG Ceramic Rod Laser pumped by arc-metal-halide-lamp", Jpn. J. Appl. Phys. 46 (2007) pp.156-160.

3. T. Saiki, S. Motokoshi, K. Imasaki, K. Fujioka, H. Fujita, M. Nakatsuka, and C. Yamanaka, “Effective Fluorescence Lifetime and Stimulated Emission Cross-section of Nd /Cr:YAG ceramics under CW Lamplight pumping”, Jpn. J. Appl. Phys. 47 (2008) pp.7896-7902 .

4. T. Saiki, S. Motokoshi, K. Imasaki, K. Fujioka, H. Fujita, M. Nakatsuka, and C. Yamanaka, “Two-pass Amplification of CW Laser by Nd/Cr:YAG Ceramic Active mirror under Lamp Light Pumping”, Opt. Comm. Vol. 282 No. 5 Mar. (2009) pp. 936-939.

5. T. Saiki, K. Funahashi, S. Motokoshi, K. Imasaki, K. Fujioka, H. Fujita, M. Nakatsuka, and C. Yamanaka, “Temperature characteristics of small signal gain for Nd/Cr:YAG ceramic lasers”, Opt. Comm. 282 (2009) pp.614-616.

6. T. Saiki, S. Motokoshi, K. Imasaki, K. Fujioka, H. Yoshida, H. Fujita, M. Nakatsuka, and C. Yamanaka, “Laser pulses amplified by Nd/Cr:YAG ceramic amplifier using lamp and solar light source”, Opt. Comm. 282 (2009) pp. 1358-1362.

7. T. Saiki, S. Motokoshi, K. Imasaki, K. Fujioka, H. Yoshida, H. Fujita, M. Nakatsuka, and C. Yamanaka, “Highly-Repeated Laser Pulses Amplified by Nd/Cr:YAG Ceramic Amplifier under CW Arc-lamp Light Pumping”, Opt. Comm. 282 (2009) pp.2556-2559.

8. K. Fujioka, T. Saiki, S. Motokoshi, Y. Fujimoto, H. Fujita and M. Nakatsuka, “Pre-evaluation method for the spectroscopic properties of YAG bulk materials by sol-gel synthetic YAG powder”, Ceramics international 35 (2009) pp. 2392-2399 .

9. K. Fujioka, T. Saiki, S. Motokoshi, Y. Fujimoto, H.Fujita, M. Nakatsuka, “Luminescence properties of highly Cr co-doped Nd:YAG powder produced by sol-gel method”, J. of Luminescence 130 (2010) pp. 455-459.

10. T. Saiki, S. Motokoshi, K. Imasaki, K. Fujioka1, H. Yoshida1, H.Fujita1, M. Nakatsuka, and C. Yamanaka, “Nd3+- and Cr3+-Doped Yttrium Aluminum Garnet Ceramic Pulse Laser Using Cr4+-Doped Yttrium Aluminum Garnet Crystal Passive Q-Switch”, Jpn. J. Appl. Phys. 48 (2009) pp.122501-1-7.

11. N. Fujiwara, T. Saiki, Hayashi, K. Fujioka, Y. Iida, M Nakatsuka, "Amplification Properties of High-power Multistage Nd/Cr:YAG Ceramic Active Mirror Lasers with Quasi-solar Light Pumping", Proc. the 1st Advanvced Lasers and Photon Sources, 2012, p49.

12. N. Hirota, T. Saiki, N. Fujiwara, N. Matsuoka, T. Hayashi, Y. Iida,
"Development of Q-switched and Mode-locked Nd/Cr:YAG Ceramic Laser"
Conference on the 2nd Advanced Lasers & Photon Source Conference, Optics & Photonics International Council, Pacifico Yokohama, Yokohama, Japan, April (2013), p79.

13. Y. Nishino, T. Saiki, T. Nakamachi, K. Fujioka, M. Nakatsuka, Y. Iida,
"Amplification of High Repetitive Pulse Laser Using Nd/Cr:YAG Ceramic Active Mirror Amplifier",
Proceeding of The 3rd Advanced Lasers and Photon Sources (ALPS’14), (2014) p167.

14. T. Nakamachi, N. Matuoka, T. Saiki, K. Fujioka, M. Nakatsuka, Y. Iida,
“Enhancement of Output Laser Power in High-Power Nd/Cr:YAG Ceramic Amplifier Based on Cross-relaxation Effect under Solar Pumping”, Proc. of Conference on the Lasers and Electro-Optics (CLEO) (2014) JTh2A. 83.

Cross-relaxation process
A. Theory
1. T. Saiki, M. Nakatsuka, K. Imasaki, "Highly Efficient Lasing Action of Nd³⁺- and Cr³⁺-Doped Yttrium Aluminum Garnet Ceramics Based on Phonon-Assisted Cross-Relaxation Using Solar Light Source", Jpn. J. Appl. Phys.Vol. 49, No.8 Aug. (2010) pp.082702-1-8.

B. Laser gain as a function of temperature
2. T. Saiki, M. Nakatsuka, K. Fujioka, S. Motokoshi, K. Imasaki, "Cross-Relaxation and Spectral Broadening of Gain for Nd/Cr:YAG Ceramic Lasers with White-Light Pump Source under High-Temperature Operation", Optics. Commun. Vol. 284 Feb. (2011) pp.2980-2984.

C. Increasing effective fluorescence lifetime of Nd ion as a function of temperature
3. T. Saiki, '"Highly Efficient Lasing Action of Solar-Pumped Laser and Its Application", RIKOGAKKAI, KANSAI UNIVERSITY Vol. 17 Oct. (2010) pp47-52.

4. T. Saiki, K. Fujioka, M. Nakatsuka, Y. Iida,
“Efficient Amplification of Nd3+/Cr3+:YAG Ceramic Lasers Based on Cross-Relaxation under Solar-Pumping”, Technical digest of Conference on the Lasers and Electro-Optics (CLEO): Science and Innovations, (2012) JW2A.25.

5. T. Saiki, M. Nakatsuka, K. Fujioka, S. Motokoshi, K. Imasaki, Y. Iida,
“Increase in Effective Fluorescence Lifetime by Cross-Relaxation Effect Depending on Temperature of Nd/Cr:YAG Ceramic Using White-Light Pump Source”,
Optics and Photonics Letters (2013), vol. 6 Ｎo.1 1350003-1-15.

6. N. Matsuoka, T. Saiki, N. Fujiwara, T. Hayashi, N. Hirota, K. Fujioka, M. Nakatsuka, Y. Iida,
“Enhancement of Output Laser Power in High-power Nd/Cr:YAG Ceramic Active Mirror Amplifiers Based on Cross-relaxation Effect under White Light Source Pumping”,
Proc. the 2nd Advanced Lasers & Photon Source Conference, Optics & Photonics International Council, Pacifico Yokohama, Yokohama, Japan, April (2013) p77.



Energy cycle using solar-pumped pulse lasers and base metalic nanoparticles
1. T. Saiki, S. Taniguchi, M. Nakatsuka, "Progresses on High-Power Solar-Pumped Solid-State Lasers and Applications for High-Temperature Chemistry", Optics Design Group, Environment and Optics No. 47 June (2011) pp.3-9.

2. D. Graham-Rowe, “Solar-Powered Lasers”, Nature Photonics 4 (2010) pp.64-65.

Generation of metal nanoparticles based on Laser ablation in Liquid.
Dependence of generating hydrogen on temperature
1. T. Okada, S. Taniguchi, T. Saiki, T. Furu, K. Y. Iida, M. Nakatsuka,
"Synthesis of Fe and FeO nanoparticles by Laser Ablation in Liquids and its Applications", Proc. the 1st Advanced Lasers and Photon Sources (ALPS), 2012, p81.

2. T. Okada, T. Saiki, S. Taniguchi, T. Ueda, K. Nakamura, Y. Nishikawa, and Y. Iida,
"Hydrogen Production using Reduced-iron Nanoparticles by Laser Ablation in Liquids",
ISRN Renewable Energy, vol. 2013 (2013) ID 827681-1-7.

Metal air cells using reduced metal nanoparticles and improving output voltage
1. T. Saiki, T. Okada, K. Nakamura, T. Karita, Y. Nishikawa, Y. Iida, "Air Cells Using Negative Metal Electrodes Fabricated by Sintering Pastes with Base Metal Nanoparticles for Efficient Utilization of Solar Energy", Int. J. of Energy Science, Vol. 2 Iss. 6 Dec. (2012) pp.228-234.

2. T. Karita, T. Saiki, T. Okada, K. Nakamura, Y. Nishikawa, Y. Iida,
“Air Fuel Cells Using Sintered Metal Pastes for Solar Energy Cycle”
Proc. the 2nd Advanced Lasers & Photon Source Conference(ALPS), (2013) p81.

3. T. Saiki, S. Uchida, T. Karita, K. Nakamura, Y. Nichikawa, S. Taniguchi Y. Iida,
"Recyclable Air Fuel Cells Using Sintered Mg Nanopastes for Solar Energy Cycle",
Proceeding of The 3rd Advanced Lasers and Photon Sources (ALPS’14), 2014) p161.

4. T. Saiki, S. Uchida, T. Karita, K. Nakamura, Y. Nishikawa, S. Taniguchi Y. Iida,
"Recyclable metal air fuel cells using sintered magnesium pastes with reduced Mg nanoparticles by high-repetitive ns pulse laser ablation in liquid", International Journal of Sustainable and Green Energy, Vol.3 No. 6 Dec. (2014) pp.143-149.

Laser sintering of metal nanopastes
1. T. Saiki, M. Yoshida, Y. Koga, K. Li, Y. Iida,
"Laser sintering of nanopastes with reduced metal nanoparticles prepared by laser ablation in liquids",
Proceeding of The 3rd Advanced Lasers and Photon Sources (ALPS’14), (2014) p163.

2. T. Saiki, Y. Iida, K. Ri, M. Yoshida, Y. Koga,
"Electrical propety of laser-sintered nanopastes with reduced metal nanoparticles prepared by laser ablation in liquids",
Advances in Materials, Vol. 3 No. 6 Dec. (2014) pp.75-88

New laser materials
1. T. Hayashi, T. Saiki, K. Fujioka, Y. Iida, M Nakatsuka,
"Amplification Properties of Ce/Cr/Nd:YAG Ceramic Lasers by Computational Calculations", Proc. the 1st Advanvced Lasers and Photon Sources, 2012, p47.

2.K. Fujioka, T. Saiki, S. Motokoshi, Y. Fujimoto, H. Fujita, M. Nakatsuka,
“Parameter mapping survey on optimized sensitizing effect of Ce/Cr/Nd:YAG material for solar-pumped solid-state lasers“, 
Journal of Luminescence (2013), vol. 143 pp. 10-13.