Myron Block 



Block Engineering, inc. 

 19 Blackstone Street 

 Cambridge, Mass. 



New instrumentation concepts Inave been developed at Block that 

 can have usefulness for oceanography. 



1. Fourier transformation spectroscopy -- 10,000 times improvement 

 over former techniques of spectral measurement. 



2. Remote Raman spectroscopy technique — quantitative high- 

 resolution spectroscopy of gases and liquids. Uses pulsed laser light 

 of certain pulse length, range gates the data, then does spectroscopy 

 on return signal, measures parts/million of chemical composition. 



3. Technique to measure daytime fluorescence without seeing the 

 effects of sunlight in same spectral region. 



k. Currently we are tying all this into a system called "digilab" • 

 computerized outputs of all sensors with operator using teletype input. 

 For example, in interferometr ic spectrometry the system ooerates by 

 "closed loop" instrumentation, i.e., the system calibrates itself, 

 wavelength scale is plotted, optimization takes place. 



We need to know something about depolarization of light in sea 

 water. 



4-1 



