The OE-300 photoreceiver consists of a premium quality photodiode followed by a high-end, variable gain transimpedance amplifier. The low noise performance (NEP) is outstanding and sets a benchmark for wideband photoreceivers particularly in the high and mid-range gain settings. The relatively large sized detectors make optical alignment easy and also ensure a very high coupling efficiency when using the Si models together with the optionally available fiber optic adapters PRA-FC/SMA.
The switchable gain from 102 to 108 V/A (decade increments) allows precise and reliable measurements within a very wide dynamic range from nanowatts up to 10 milliwatts optical power.
Many additional features like switchable low-pass filters, offset adjustment, switchable AC/DC coupling and the capability of manual and opto-isolated remote control by a PC make the OE-300 the most versatile wideband photoreceiver in its class.
The Si-models are factory equipped with an optical free space input. There is the choice between a 1.035"-40 threaded flange including a coupler ring with 30 mm outer diameter and a 25 mm unthreaded flange. Both types offer a broad compatibility with optical standard accessories like tubes, lenses, cage systems, optical adapters etc. from various manufacturers.
The threaded free space input e.g. can be easily converted to an optical fiber input by screwing a 1.035"-40 externally threaded fiber-adapter to it.
For the InGaAs models there is the choice between a fixed fiber input (FC) model allowing highly accurate fiber optic measurements and a model with free space input (1.035"-40 threaded and 25 mm unthreaded flange available).
All the OE-300 models can be easily mounted to standard M4 and 8-32 UNC threaded optical post holders via the optionally available post holder adapter type PRA-PAP.
|Detector size [mm]
||1.0 x 1.0||Ø 3.0||Ø 0.08||Ø 0.3|
|400 - 1000||320 - 1000||900 - 1700||800 - 1700|
(fiber adapters available)
Free space(fiber adapters available)
|NEP (Dependent on Gain Setting) [/√Hz]||76 fW - 322 pW||81 fW - 325 pW||47 fW - 180 pW||52 fW - 192 pW|
|Datasheet||1.16 MB||1.24 MB||1.01 MB||1.14 MB|
The following characteristics are valid for all models:
|Performance Range||Low Noise||High Speed|
Gain Setting [V/A]
(−3 dB) [MHz]
||±1 % (transimpedance)|
|Low Pass Filter||switchable to 1 MHz and 10 MHz|
||±1 V (@ 50 Ω load), for linear amplification|
||±15 V, +150 mA/−100 mA typ., ±200 mA recommended|
|Control Interface||5 opto-isolated digital inputs, TTL/CMOS compatible, analog offset control voltage input|
|Case||170 x 60 x 45 mm (L x B x H), weight 320 g (0.74 lb.)|
1) model OE-300-SI-30
Offset adjustable by trimpot or external control voltage. LED overload indication. Output short-circuit protected. Power supply via 3-pin Lemo® socket. A mating connector is provided with the device. Optional power supply PS-15 available. For further information please view the datasheet or contact FEMTO.
The photoreceiver series HSA-X-S was broadened by two models featuring an improvement in noise performance of up to 40%. The output reflection coefficient was reduced by 8 dB at the same time.
FEMTO® Messtechnik GmbH
Phone: +49-(0)30-280 4711-0
Fax: +49-(0)30-280 4711-11
© FEMTO 2016