Del Mar Photonics

Customer inquiry:

I am interested in purchasing a pulsed Nd:YAG laser with excellent beam quality for a series of NL optical experiments including HyperRayleigh Scattering and pulsed Z-scan experiments. One option I am considering is a telescope cavity with a removable aperture to be able to reach a TEM00 mode for the Z-scan experiments, but having the flexibility to remove the aperture and gain more energy/pulse (at the expense of more transverse spatial beam structure) for the HyperRayleigh studies.
I am however intrigued by your ring laser design specifically the  LQ529  and would like to know more. Can you tell me what the M2 value of the 1064nm beam is? Would it be possible in the future to upgrade to LQ929 if we get funding to build up an amplified Ti:Sapphire system? What is the approximate price for a LQ529 system with the option of a second harmonic module as an external module?
 

For the Z-scan experiments a single transverse mode is required.
We would be interested in a having as much energy /pulse (40mJ?) and lowest M2 (2) as possible. A 10Hz PPR would be fine. The actual beam diameter and divergence are by themselves not critical, we would like to have the lowest M2 value possible.
 
However for HyperRayleigh experiments a multi-mode beam profile would be Ok, provided it is relatively smooth. Would it be possible for us to insert and remove the aperture, letting us switch from a TEM00 low energy/pulse to a multimode higher energy/pulse laser?

Del Mar Photonics proposal:
 

Pulsed Nd:YAG lasers with cavity aperture for singe transversal mode

1. Pulsed Nd:YAG laser model LQ529C:
Beam distribution – TEM00 (singe transversal mode);
PRR – 10 Hz;
Output beam diameter – about 2.3 mm (cavity aperture diameter about 2.3 mm);
Output energy at 1064 nm – not less than 25 mJ (>/=25 mJ);
M2 – not less than 1.7 (>/=1.7);
Linewidth at 1064 nm - not more than 1 cm^-1.

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2. Pulsed Nd:YAG laser model LQ629-100:
Beam distribution – TEM00 (singe transversal mode);
PRR – 10 Hz;
Output beam diameter – about 5 mm;
Output energy at 1064 nm – not less than 50 mJ (>/=50 mJ);
M2 – not less than 1.7 (>/=1.7);
Linewidth at 1064 nm - not more than 1 cm^-1.

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Typical near field distribution for singe transversal mode (TEM00).

Basic information about Hyper-Rayleigh Scattering presented by the featured Del Mar Photonics customer at Northwestern University