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Vol. 92, Issue 5, May 2008, pp. 61-68

 

 

Bullet

Design and Fabrication of Dual Mode Pyroelectric Sensor: High Sensitive Energymeter for Nd:
YAG Laser and Detector for Chopped He-Ne Laser

 

S. SATAPATHYa, *, Puja SONIb, P. K. GUPTAc, V. K. DUBEYd and K. B. R. VARMAe

 

a Laser Materials Development & Device Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India

Tel.: +91- 731- 2488662, E-mail: srinu73@cat.ernet.in

b Department of Applied physics, Shri G. S. Institute of Technology and Science, Indore 452013, India

E-mail: pujasoni27@gmail.com

c Laser Materials Development & Device Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India

Tel.: +91- 731- 2488651,  E-mail: pkgupta@cat.ernet.in

d Laser Systems Engineering Division, Raja Ramanna Centre for Advanced Technology, Indore  452013, India

Tel.: +91- 731- 2442463, E-mail: vkdubey@cat.ernet.in

e Materials Research Centre, Indian Institute of Science, Bangalore 560 012, India

E-mail: kbrvarma@mrc.iisc.ernet.in

 

 

Received: 29 March 2008   /Accepted: 20 May 2008   /Published: 26 May 2008

 

Abstract: Pyroelectric sensor using TGS has been designed and fabricated which can be operated in laser energy meter mode as well as pyroelectric detector mode. The amplifying circuit configuration has very good signal to noise ratio, very high input impedance and low drift. The pyroelectric sensor has been tested using Q-switched Nd: YAG laser and chopped He-Ne laser. The sensitivity of pyroelectric sensor in energymeter mode is 421.7V/J and the voltage responsivity of the pyroelectric sensor is 3.27 V/W in detector mode.

 

Keywords: Pyroelectric, Laser energy meter, Pyroelectric detector, Thermal time constant

 

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