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1992•The Review of Laser EngineeringOpen access

Tuning Properties of SFG in KTP.

Toshiki Kishimoto, K. Imamura, Masahiro Itoh

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Abstract

Sum frequency generation (SFG) is one of the attractive methods for blue lasing with easy performance.Focusing on SFG, particularly, pumped by a single laser diode and using KTP (KTiOPO4) grown in a tungustate flux, we studied the phase matching conditions and the achievable shortest wavelength.The phase matching angles of the SFG using a Nd : YAG laser (pumped by LD) and LD (0.809,ƒÊm) were ƒÆ= 90•K, ƒÓ=84•‹ or ƒÆ=74•K, ƒÓ =90•‹, which were slightly different from the reported ones (ƒÆ =90•‹, ƒÓ =90•‹).We could phase-match the system to a shorter wavelength, 0.452,ƒÊm, than those reported.

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Sum frequency generation (SFG) is one of the attractive methods for blue lasing with easy performance.Focusing on SFG, particularly, pumped by a single laser diode and using KTP (KTiOPO4) grown in a tungustate flux, we studied the phase matching conditions and the achievable shortest wavelength.The phase matching angles of the SFG using a Nd : YAG laser (pumped by LD) and LD (0.809,ƒÊm) were ƒÆ= 90•K, ƒÓ=84•‹ or ƒÆ=74•K, ƒÓ =90•‹, which were slightly different from the reported ones (ƒÆ =90•‹, ƒÓ =90•‹).We could phase-match the system to a shorter wavelength, 0.452,ƒÊm, than those reported.

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Available abstract

Sum frequency generation (SFG) is one of the attractive methods for blue lasing with easy performance.Focusing on SFG, particularly, pumped by a single laser diode and using KTP (KTiOPO4) grown in a tungustate flux, we studied the phase matching conditions and the achievable shortest wavelength.The phase matching angles of the SFG using a Nd : YAG laser (pumped by LD) and LD (0.809,ƒÊm) were ƒÆ= 90•K, ƒÓ=84•‹ or ƒÆ=74•K, ƒÓ =90•‹, which were slightly different from the reported ones (ƒÆ =90•‹, ƒÓ =90•‹).We could phase-match the system to a shorter wavelength, 0.452,ƒÊm, than those reported.

Key concepts: Phase matching, Materials science, Optics, Laser, Wavelength, Lasing threshold, Blue laser, Diode

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