Si Amplified Photodetectors
Chapter 3: Description
Rev B. May 22, 2017
Page 5
Chapter 3 Description
3.1. Introduction
The PDA015A(/M), shown in Figure 1, is a high-speed amplified silicon
photodetector designed for detection of optical signals over the 400 to 1000 nm
wavelength range. It has a frequency response from DC to 380 MHz, a 1 ns
impulse response time, and a maximum transimpedance gain of 50 kV/A. A
buffered output drives 50
Ω
loads up to 5 V with an NEP of 36 pW/
√
Hz.
A ±12 VDC power supply is included with each amplified photodetector, and a
switch on the power supply can be toggled to select the appropriate input voltage
(115 or 230 VAC). The PDA015A housing includes a removable threaded coupler
(SM1T1) and retaining ring (SM1RR) that are compatible with any of Thorlabs’
SM1-threaded (1.035”-40) accessories. The housing also accommodates
Thorlabs’ SM05-threaded (0.535"-40) series of adapters and accessories. This
allows convenient mounting of external optics, light filters, and apertures, as well
as providing an easy mounting mechanism using Thorlabs’ cage assembly
accessories. Versions with imperial or metric tapped mounting holes, the
PDA015A and PDA015A/M respectively, are available.
3.2. Maintenance and Care
There are no serviceable parts in the PDA015A optical head or power supply. The
housing may be cleaned by wiping with a soft damp cloth. The window of the
detector should only be cleaned using optical grade wipes. If you suspect a
problem with your PDA015A, please contact us at [email protected] and
an engineer will be happy to assist you.
Power
Connector
BNC Output Connector
Detector
Removable
SM1T1
Threaded
Coupler and
SM1RR
Retaining Ring
Figure 1. Features of the PDA015A Amplified Si Photodetector
Internal SM05
Threading
Slide Power
Switch
Summary of Contents for PDA015AM
Page 1: ...PDA015A M Si Amplified Detector User Guide ...
Page 22: ...www thorlabs com ...
