Photodiode Array

What does it look like?

http://lw.pennnet.com/Articles/Article_Display.cfm?Section=ARCHI&Subsection=Display&ARTICLE_ID=36131&KEYWORD=ingaas%20photodiode%20arrays&p=13

http://www1.shimadzu.com/products/lab/spectro/multi.html

How does it work?

Basically, a whole bunch of capacitors that detect how much charge was released.

http://elchem.kaist.ac.kr/vt/chem-ed/optics/detector/pda.htm

How does it work?

hwe.oita-u.ac.jp/kiki/ronnbunn/paper_choi.pdf

What does it detect?

A photodiode array is good for visible and ultraviolet radiation.

Dr. Prushan’s Stolen Slides

Advantages Faster

More diodes High S/N Ratio

Faster scan = less time for noise More rugged/durable

No moving scanning part

Advantage Stray light not a problem

hwe.oita-u.ac.jp/kiki/ronnbunn/paper_choi.pdf

The Price? “Contact for a quote” – Must not be cheap On Ebay:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330016226739

$6850 http://aironline.com/Merchant2/merchant.mvc?

Screen=CTGY&Store_Code=AI&Category_Code=LCD $3000

http://cgi.ebay.com/HP-8452A-DIODE-ARRAY-SPECTROPHOTOMETER_W0QQitemZ320022509968QQcmdZViewItem$6850

$450 (Recycled)

Sources Harris, Daniel C. 2003. Quantitative chemical analysis. New York:

W. H. Freeman and Company. http://lw.pennnet.com/Articles/Article_Display.cfm?

Section=ARCHI&Subsection=Display&ARTICLE_ID=36131&KEYWORD=ingaas%20photodiode%20arrays&p=13

http://elchem.kaist.ac.kr/vt/chem-ed/optics/detector/pda.htm http://www.gmi-inc.com/AnyLab/HP%208452A

%20Spectrophotometer.htm http://hwe.oita-u.ac.jp/kiki/ronnbunn/paper_choi.pdf#search=

%22advantages%20of%20photodiode%20array%22