Raman shifter CRS14 from SOL instruments
Solid-state Raman shifter CRS14 is an easy-to-use and highly-efficient device which allows to convert the Nd:YAG laser output of the fundamental and second harmonic and to extend the tuning range of a Ti:Sapphire laser up to 1300 nm.
- Reliable and easy in use solid-state laser
- Distinguished for long-term stability of output parameters
- With sealing of all crystals
Description and principle of operation of the solid-state Raman shifter CRS14
Solid-state Raman shifter CRS14 allows to convert the Nd:YAG laser output of the fundamental and second harmonic and to extend the tuning range of a Ti:Sapphire laser up to 1300 nm.
CRS14 provides highly-efficient conversion of tunable radiation from a Ti:Sapphire laser to tunable radiation of Stimulated Raman Scattering at the 1st, 2nd and 3rd Stokes components.
The optimum conversion in the CRS14 is achievable at pump with a Ti:Sapphire laser operating in the wavelength range from 815 to 900 nm. To convert radiation a Ba(NO3)2 crystal is used which provides a 1047 cmˉ¹ spectrum shift.
Raman shifter CRS14 is a reliable an easy-to-use laser with long-term stability of output parameters and sealing of all crystals.
Principle of operation of the CRS14 Raman shifter
Specification and dimensions of the Raman shifter CRS14
The CRS14 solid-state Raman shifter uses 6 pairs of specially designed changeable cavity mirrors.
By changing one mirror pair for another, highly-efficient generation of tunable radiation of the 1st, 2nd and 3d Stokes components individually or together can be established at the CRS14 output.
The Ti:Sapphire pump wavelength range is divided into two subranges. Subrange I covers the operational wavelength range 815-850 nm, while Subrange II covers the operational wavelength range 850-900 nm of Ti:Sapphire laser.
By choosing between Subrange I or Subrange II and choosing one of the available 6 pairs of cavity mirrors, tunable radiation with the parameters as follows can be established at the CRS14 output:
For Ti:Sapphire output from 815 to 850 nm (Subrange I) CRS14 provides:
| 1st Stokes component in 890 – 950 nm range: | max. efficiency ~ 35 % |
| 2nd Stokes component in 980 – 1050 nm range: | max. efficiency ~ 30 % |
| 3rd Stokes component in 1090 – 1170 nm range: | max. efficiency ~ 20 % |
1st Stokes component in 890 – 950 nm range: max. efficiency ~ 35 %
- 2nd Stokes component in 980 – 1050 nm range: max. efficiency ~ 30 %
- 3rd Stokes component in 1090 – 1170 nm range: max. efficiency ~ 20 %
For Ti:Sapphire output from 850 to 900 nm (Subrange II) CRS14 provides:
| 1st Stokes component in 940 – 990 nm range: | max. efficiency ~ 35 % |
| 2nd Stokes component in 1030 – 1120 nm range: | max. efficiency ~ 25 % |
| 3rd Stokes component in 1160 – 1245 nm range: | max. efficiency ~ 20 % |
- 1st Stokes component in 940 – 990 nm range: max. efficiency ~ 35 %
- 2nd Stokes component in 1030 – 1120 nm range: max. efficiency ~ 25 %
- 3rd Stokes component in 1160 – 1245 nm range: max. efficiency ~ 20 %
Upon request CRS14 can be completed with:
- a set of mirrors for providing simultaneous generation of the 1st, 2nd and 3rd Stokes radiation components;
- a telescopic system to ensure optimum power densities in a Ba(NO3)2 crystal;
- a second harmonic generator to extend the tunability range from 350 to 620 nm.
CRS14 solid-state Raman shifter for conversion of tunable Ti:Sapphire laser output, combined with a Ti:Sapphire pump laser, allows generation of a tunable narrow-linewidth output radiation in the ranges 350-620 nm and 690-1245 nm.
CRS14 solid-state Raman shifter for conversion of Nd:YAG laser output
CRS14 solid-state Raman shifter for conversion of Nd:YAG laser output is an easy-to-operate device which allows to convert the Nd:YAG laser output of the fundamental and second harmonic.
A Ba(NO3)2 crystal, providing a 1047 см-1 shift, is used for radiation conversion. The specially designed cavity pair of mirrors allows generation of output radiation with the following parameters:
For fundamental wavelength 1064 nm CRS14 provides:
| 1st Stokes component at 1197 nm: | average efficiency 30 % |
| 2nd Stokes component at 1369 nm: | average efficiency 15 % |
| 3rd Stokes component at 1598 nm: | average efficiency 10 % |
- 1st Stokes component at 1197 nm: average efficiency 30 %
- 2nd Stokes component at 1369 nm: average efficiency 15 %
- 3rd Stokes component at 1598 nm: average efficiency 10 %
For second harmonic wavelength 532 nm CRS14 provides:
| 1st Stokes component at 563.4 nm: | average efficiency 50 % |
| 2nd Stokes component at 598.6 nm: | average efficiency 40 % |
| 3rd Stokes component at 638.7 nm: | average efficiency 30 % |
| 4th Stokes component at 684.5 nm: | average efficiency 10 % |
| 5th Stokes component at 737.3 nm: | average efficiency 8 % |
- 1st Stokes component at 563.4 nm: average efficiency 50 %
- 2nd Stokes component at 598.6 nm: average efficiency 40 %
- 3rd Stokes component at 638.7 nm: average efficiency 30 %
- 4th Stokes component at 684.5 nm: average efficiency 10 %
- 5th Stokes component at 737.3 nm: average efficiency 8 %
Upon request CRS14 can be completed with:
- a set of mirrors for providing simultaneous generation of the 1st, 2nd, 3rd, 4th and 5th Stokes radiation components;
- a telescopic system to ensure optimum power densities in a Ba(NO3)2 crystal;
- a second harmonic generator (KTP, BBO and LBO crystals) to extend the number of radiation wavelengths.
CRS14 Raman shifter for conversion of Nd:YAG laser output can be combined with another laser operating in the spectral range from 400 to 1800 nm.
Dimensional drawing of the CRS14 Raman shifter
Other pulsed tunable lasers from SOL instruments:
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