发明名称 |
THULIUM LASER PUMPED MID-IR SOURCE WITH BROADBANDED OUTPUT |
摘要 |
A Thulium laser is used to directly drive a ZnGeP2 optical parametric oscillator with a nominal 2 pm output to generate the 3-5 micron wavelengths. In one embodiment, the ZGP OPO is configured as a linear resonator and in another embodiment the ZGP OPO is configured as a ring resonator. The ring resonator prevents optical feedback to the Thulium laser and eliminates the need for an optical isolator. Moreover, the Thulium laser pump is implemented as a Tm:YA103 laser in which YAlO is the host for the Thulium YAlO is particularly beneficial as it is a mechanically hard optical material allowing high thermal loading without fracture as well as natural birefringence that can minimize thermal birefringence losses. A longer wavelength transition at 1.99 microns is selected to minimize nonlinear crystal loss. More particularly, a high power, high efficiency Tm:YA103 laser repetitively Qswitched at 10 kHz is used to drive a ZnGeP2 OPO. The system is run with room temperature components and achieves over 3 W at 3-5 microns with an efficiency of 5% starting from the pump diode. A two crystal resonator design allows tuning over multiple spectral peaks or alternately as an ultra broad spectral source. |
申请公布号 |
WO2004070895(A2) |
申请公布日期 |
2004.08.19 |
申请号 |
WO2004US02478 |
申请日期 |
2004.01.29 |
申请人 |
BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC.;POMERANZ, LEONARD, A. |
发明人 |
POMERANZ, LEONARD, A. |
分类号 |
G02F1/39;H01S3/00;H01S3/08;H01S3/094;H01S3/0941;H01S3/117;H01S3/16 |
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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