Search the CONFOCAL archive at
http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal

Have a look at hamamatsu? I'm sure they are high quality.
http://sales.hamamatsu.com/en/products/solid-state-division/si-photodiode-series/si-apd.php

I have no connection with Hamamatsu.

Dale

Peng Xi wrote:
> Search the CONFOCAL archive at 
> http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal
> 
> Hi,
> 
>     Anybody know which company produces high-quality  Avalanche 
> photodiode (APD)? I am planning to use it to detect 800nm signal. I 
> prefer high sensitivity, low noise, analog one used in confocal 
> reflective devices. Thank you for your advice!
> 
>  
> 
> Best regards,
> Peng Xi
> Associate Professor
> Institute for Laser Medicine and Biophotonics
> Shanghai Jiao Tong University
> 800 Dongchuan Rd.
> Shanghai 200240, China
> Tel: (86) 21-3420-4076
> http://biophotonics.sjtu.edu.cn/
> 
>  
>