Limits...
RbTiOPO 4 cascaded Raman operation with multiple Raman frequency shifts derived by Q-switched Nd:YAlO 3 laser

View Article: PubMed Central - PubMed

ABSTRACT

An intra-cavity RbTiOPO4 (RTP) cascade Raman laser was demonstrated for efficient multi-order Stokes emission. An acousto-optic Q-switched Nd:YAlO3 laser at 1.08 μm was used as the pump source and a 20-mm-long x-cut RTP crystal was used as the Raman medium to meet the X(Z,Z)X Raman configuration. Multi-order Stokes with multiple Raman shifts (~271, ~559 and ~687 cm−1) were achieved in the output. Under an incident pump power of 9.5 W, a total average output power of 580 mW with a pulse repetition frequency of 10 kHz was obtained. The optical conversion efficiency is 6.1%. The results show that the RTP crystal can enrich laser spectral lines and generate high order Stokes light.

No MeSH data available.


Average output power of the Raman laser versus incident pump power under different pulse repetition frequencies.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC5036053&req=5

f3: Average output power of the Raman laser versus incident pump power under different pulse repetition frequencies.

Mentions: The Raman threshold decreased with the pulse repetition frequency. The output power of the leaked fundamental light at 1.08 μm from the OC was measured after filtering by a mirror with partial-reflection coated at 1.08 μm and high-reflection coated above 1.11 μm. It shows that the leaked output power of the fundamental light increased with the pulse repetition frequency. At the pulse repetition frequency of 5 kHz, the leaked power of the fundamental light was about 24 mW, which increased to about 55 mW at the frequency of 15 kHz. The leaked output power of fundamental light had been deducted from the total output power. The average output power of the Raman output versus the incident diode pump powers at the pulse repetition frequency of 5, 10, and 15 kHz are shown in Fig. 3. Under an incident pump power of 9.5 W, the maximum total output power was 580 mW at a pulse repetition frequency of 10 kHz, corresponding to a conversion efficiency of 6.1%.


RbTiOPO 4 cascaded Raman operation with multiple Raman frequency shifts derived by Q-switched Nd:YAlO 3 laser
Average output power of the Raman laser versus incident pump power under different pulse repetition frequencies.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5036053&req=5

f3: Average output power of the Raman laser versus incident pump power under different pulse repetition frequencies.
Mentions: The Raman threshold decreased with the pulse repetition frequency. The output power of the leaked fundamental light at 1.08 μm from the OC was measured after filtering by a mirror with partial-reflection coated at 1.08 μm and high-reflection coated above 1.11 μm. It shows that the leaked output power of the fundamental light increased with the pulse repetition frequency. At the pulse repetition frequency of 5 kHz, the leaked power of the fundamental light was about 24 mW, which increased to about 55 mW at the frequency of 15 kHz. The leaked output power of fundamental light had been deducted from the total output power. The average output power of the Raman output versus the incident diode pump powers at the pulse repetition frequency of 5, 10, and 15 kHz are shown in Fig. 3. Under an incident pump power of 9.5 W, the maximum total output power was 580 mW at a pulse repetition frequency of 10 kHz, corresponding to a conversion efficiency of 6.1%.

View Article: PubMed Central - PubMed

ABSTRACT

An intra-cavity RbTiOPO4 (RTP) cascade Raman laser was demonstrated for efficient multi-order Stokes emission. An acousto-optic Q-switched Nd:YAlO3 laser at 1.08 μm was used as the pump source and a 20-mm-long x-cut RTP crystal was used as the Raman medium to meet the X(Z,Z)X Raman configuration. Multi-order Stokes with multiple Raman shifts (~271, ~559 and ~687 cm−1) were achieved in the output. Under an incident pump power of 9.5 W, a total average output power of 580 mW with a pulse repetition frequency of 10 kHz was obtained. The optical conversion efficiency is 6.1%. The results show that the RTP crystal can enrich laser spectral lines and generate high order Stokes light.

No MeSH data available.