Reflective optical sensor for heart rate measurement

[vennelakokkonda]

i have tried with 950nm ir transmitter and reciever pair.but couldnot get d output..can anyone please suggest me a reflective optical sensor suitable for heart rate measurement..it should be sensitive to change in light intensity..or suggest me any good photodetector for super red led which should also be sensitive to change in light intensity..

 

[kak111]

Here is some reading for start...............

Sensor Report ITP – 2008

Optical Heart Rate Monitor : Low Cost USB DAQ

Heart rate measurement from fingertip :Embedded Lab

**broken link removed**

Heart rate measurement from fingertip Part 1 Schematic Introduction