拉曼转换器?RS
Product description:
The Raman shifters are used for downshifting the laser radiation frequency in order to generate powerful IR femtosecond pulses. The RS femtosecond Raman shifters employ a novel scheme. The scheme is based on Raman conversion of a chirped laser pulse with subsequent pulse compression. Compressed gases (hydrogen, methane, sulphur hexauoride) and barium nitrate crystal are used as active media. The Raman frequency shift varies from 775 cm-1 for sulphur hexauoride to 4155 cm-1 for hydrogen.The energy conversion eciency reaches 30%. The using small volume Raman cells (less than 100 cm3) provides the safety operation. The optical scheme and sizes of Raman lasers depend on the pump laser pulse energy which can vary from 0.1 mJ to 100 mJ.
The RS Raman shifter family includes three standard models for traditional sources RS-800, RS-1050 and RS-1250 (800 nm,1050 nm and 1250 nm respectively). Customized enquiries are welcome.
拉曼转换器RS
·转化效率可达30%
·各种不同介质有不同频率转换标准
·输入脉冲能量高达100mJ
·标准模块是800nm,1058nm和1250nm
Wavelength after conversion of dierent sources in various active media
RS |
活性介质 | 氢 | 甲烷和氘 | * |
光源和转换器 | （气体） | （气体） | （晶体） |
Ti:S(800 nm) | 1200 nm | 1050 nm | 870 nm |
RS-800 |
Yb:KYW(1058 nm) | 1890 nm | 1530 nm | 1180 nm |
RS-1050 |
Cr:F(1250 nm) | 2600 nm | 1970 nm | 1430 nm |
RS-1250 |
Pulse shape of the Ti:Sapphire laser pulse with duration of 48 fs at the wavelength of 800 nm (purple curve) and converted to rst Stokes with duration of 52 fs at the wavelength of 1200 nm by stimulated Raman scattering in hydrogen conned in the capillary.
