发明名称 |
EYESAFE LASER TRANSMITTER |
摘要 |
PURPOSE: A single resonator cavity (16) for both the pump laser and the optical parametric oscillator is provided to make simple the design of the cavity and increase total optical efficiency. CONSTITUTION: An eye safe laser(10) transmitter comprises a single resonator cavity (16) for both the pump laser and the optical parametric oscillator (22) which has the surface partially reflected from at least one end to partially transmit a second light from cavity and partially reflect a first and second light in cavity. The optical parametrim oscillator in the resonator cavity changes the light of pumping frequency to the light of output frequency. A Nd: YAG rod (24) provides gain for light at a first wavelength. A combined Q-switch/Brewster plate (26) Q-switches the light to increase its intensity and polarizes the light so that its polarization plane is perpendicular to the Z-axis of a KTP crystal functioning as the optical parametric oscillator, thereby providing type II phase matching conditions. The optical parametric oscillator transforms the light at the first wavelength to light at a second wavelength which is output through a partially reflective out coupler at a wavelength which will not harm the eyes.
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申请公布号 |
KR20000022139(A) |
申请公布日期 |
2000.04.25 |
申请号 |
KR19987010555 |
申请日期 |
1998.12.23 |
申请人 |
RAYTHEON COMPANY |
发明人 |
CHEN, TZENG, S.;STULTZ, ROBERT, D. |
分类号 |
G02F1/39;G01S7/484;G01S17/10;H01S3/081;H01S3/108;H01S3/113;(IPC1-7):H01S3/108 |
主分类号 |
G02F1/39 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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