Laser Diode Amplifiers

what simple circiut and what type of components would i use in a amplifier circuit for a photodiode?

I am using the photodiode and a laser pointer to make a simple alarm control by monitering the current&voltage from the diode using LabView but the monitered V & I seem to be to unstable to moniter properly so i was told to make a amplifier circuit. Can anyone help me and show me a simple circuit that would work and what type/make/rating of components would i need to buy. (Phtodiode used is RS305462)

The output of a photo-diode is a current proportional to the illumination. This is probably in the micro-amp region for your situation. It would help if you posted the information. When I looked it up (see second link) there is an example circuit.

It is easiest to design with an op amp as in this example. This circuit is a current to voltage converter (first link, or look it up). Simply adjust the feedback resistor to get the conversion ratio, for example 1 meg-ohm gives 1V/uA. The op-amp should be a low bias current type, so the bias current is a small fraction of the photo-diode current. e.g. LF411, LF356, or LT1012, etc.

Issues:
1) Op amp circuits need a dual polarity supply, + and minus 5V relative to your common will do.

2) The example circuit shows the photo-diode connected to the negative supply so it has bias, and works faster. It can also connect to common, so it operates as a current source.

3) If the circuit is unstable (oscillations) it is due to capacitance across the diode and its connecting cable. In this case add a capacitor of similar value across the feedback resistor to compensate.

When you say "with labview", I assume you are using some sort of data acquisition system with labview software. This will read the voltage from the I-V converter. If it has mV sensitivity (say 10 or 50mV full scale) then you can connect the diode directly to this input, and have a load resistor across the diode that holds the voltage across the photo-diode within that range (10-50mV) with the current it produces when illuminated. This is using the resistor as a current sensor, basically the diode is short circuited by the resistor, allowing only a few millivolts across the resistor.. This could be anywhere from 1K to 50K for typical currents. Trial and error to determine the current.

About the stability, maybe the beam is wandering. Ideally the beam covers most of the diode active area, and may need careful alignment and some sort of device to hold the beam fixed on the target. I expect with a hand held pointer it will be wandering around too much, on and off the sensitive area. It is also possible room lighting is interfering. You could use a red filter at the diode, the colour of the pointer, to reduce room lighting effects.

The first link is about I-V converters in general, and you will see that op-amps are much easier to use.

Laser Diode Microsystems $301.11 Laser Diode Microsystems provides the reader with the basic knowledge and understanding required for using semiconductor laser diodes in optical microsystems and microoptical electromechanic systems. This tutorial addresses the fundamentals of semiconductor laser operation and design, coupled with an overview of the types of laser diodes suitable for use in Microsystems, along with their distinguishing characteristics. Emphasis is placed on laser diode characterization and measurement as well as the assembly techniques and optical accessories required for incorporation of semiconductor lasers into complex microsystems. Equipped with typical results and calculation examples, this handon text helps readers to develop a feel for how to choose a laser diode, characterize it and incorporate it into a microsystem. Author: Zappe, Hans P./ Zappe, H. Series Title: Microtechnology and Mems (Hardcover) Binding Type: Hardcover Number of Pages: 355 Publication Date: 2003/10/10 Language: English Dimensions: 9.21 x 6.14 x 0.81 inches

Dime Used to Illustrate Miniature Size of the Diode of an Injection Laser $79.99 Dime Used to Illustrate Miniature Size of the Diode of an Injection Laser - Premium Photographic Print

Study of Laser Diode and Edfa $111.53 This book basically gives the over view about The properties of erbiumdoped fiber amplifier (EDFA) such as gain and noise figure have been studied. By determining the characteristics of the 980nm, 1480nm 1550nm laser sources and ASE (amplified spontaneous emission) at the output of the amplifier used to determine the gain and noise figure of EDFA. This model allows to follow the signal (1550nm), pump (980nm) and ASE as they propagate along the fiber and determine population inversion .The both forward and backward propagation ASE are important in determining the overall gain and noise figure. For the amplification of more than 80 channels the DWDM (Dense Wavelength Division Multiplexing) has required CBand (15251565)nm and LBand (15651610)nm EDFA.We show that a flat gain spectrum can be achieved in the range from 1565 to 1610 nm when the EDF length, pump power and pump configuration are appropriately chosen. Special care must be taken when selecting the EDF length. Author: Kumar, Pankaj/ Kumar, Chakresh/ Chack, Devendra Binding Type: Paperback Number of Pages: 68 Publication Date: 2011/06/19 Language: English Dimensions: 9.02 x 5.98 x 0.16 inches

Monolithic Diode-Laser Arrays $79.9 No Synopsis Available

Diode Laser Arrays $89.7 No Synopsis Available

Laser Diode Modulation and Noise $145.28 No Synopsis Available

CET Domain 10021910 Playstation 3 Compatible Laser Diode $72.83 Replace your damaged laser diode built for Playstation 3 KEM400AAA and KES400AAA laser lenses. Use and replace your laser diode with precaution. All laser diodes are extremely ESD sensitive. Compatible Models: Playstation 3 compatible KEM400AAA and KES400AAA laser lenses (sold seperately). Note: Installation guide is not included' please look for it online or use the help of an accreditate technician. We will not be responsible for any damage of your device due to improper installation. This item takes between 721 days to ship/arrive because it ships out of Hong Kong or China.

Cet 10021911 Playstation 3 Compatible 410 Series Laser Diode $46.28 Replace your damaged laser diode built in your PlayStation 3 KEM410 and KES410 laser lens. Use and replace your it with precaution as this laser diode is very fragile and extremely ESD sensitive. Compatible Models: Playstation 3 compatible KEM410 and KES410 laser lenses (not included). Note: Installation guide is not included' please look for it online or use the help of an accreditate technician. We will not be responsible for any damage of your device due to improper installation. This item takes between 721 days to ship/arrive because it ships out of Hong Kong or China.

Simulation of Ingan Blue Laser Diode $172.06 In this book, the design of InGaN LDs structures including multi quantum wells (MQWs) active region device are described and investigated by integrated system engineering technology computer aided design (ISE TCAD) device simulator. The parameters of the LDs structures are varied and optimized for high performance. This optimization study involves aspects such as thickness of active region, doping, thickness of stopper layer region, thickness of quantum wells and quantum barriers, number of quantum wells and several approaches to improve and achieve high efficiency, low threshold current and high output power of InGaN LDs. The basic LDs structures treated here are FabryPerot type InGaN double heterostructure (DH), separate confinement heterostructure (SCH) and multi quantum wells (MQWs).High performance LD has been obtained by using multi quantum wells incorporated with the optimized parameters. The lowest threshold current, higher external quantum efficiency and characteristic temperature are obtained when the number of InGaN well layers is two, at our laser emission wavelength of 415 nm, which is related to the problem of inhomogeneous carrier. Author: Thahab, Sabah Binding Type: Paperback Number of Pages: 232 Publication Date: 2011/01/31 Language: English Dimensions: 5.98 x 9.00 x 0.53 inches

ZT Amplifiers Club 12 Guitar Combo Amplifier $549 The Club 12 is ZT Amplifiers' premium, stage-ready musical instrument amplifier. It offers a no-compromise output level and frequency range while remaining true to the ZT design spirit of compact and lightweight gear for the real world. Like all ZT products, the Club is simple and intuitive enough to allow anyone to plug and play without much effort. ZT Amplifiers Club 12 Guitar Combo Amplifier Features EFX Loop Plate Style Reverb Variable Headphone/DI Output Custom Ultra-High Performance 12 inch Speaker, Switchable External Speaker Output (8 ohms minimum) Aux Input on 1/8 inch Stereo Jack Voltage switch 115V/230V The Club is the amp that shows what ZT can accomplish without limits. With the Lunchbox, ZT proved that a tiny amp can hold its own on stage. Now we introduce a compact, lightweight 12 inch combo that can hold its own with anything. Sharing the same proprietary electronics design of the Lunchbox amp, the Club is capable of delivering 200 watts with output over 130dB at only 22 pounds and just a few inches bigger than the custom 12 inch driver inside. ZT Amplifiers Club 12 Guitar Combo Amplifier System Design 200w Class A/B Power Amplifier Ultra-low latency circuit for player responsiveness Pure analog front-end, with diode overdrive capability Proprietary dynamic tone shaping Vintage modeled tone stack Class A/B output stage with unregulated linear supply Sealed-box speaker tuning The Club 12 expands on the Lunchbox platform by featuring separate bass and treble controls, an effects loop, and a traditional reverb. The rock-solid enclosed cabinet reinforces the Club's serious, kick-you-in-the-chest low end. Highs and mids are detailed, with rich harmonics and an immediate attack that lets the player really connect with the amp. The Club is ZT with the gloves off. There is simply no stage it won't fill. ZT Amplifiers Club 12 Guitar Combo Amplifier Controls Volume Gain Treble Bass Reverb Line Out/Headphone Level

Diode Laser and Naocl as Root Canal Disinfectant $111.53 Enterococc faecalis considered to be the mostresistant bacteria of the root canal, in the presentstudy we used two types of root canal disinfectant toshow their effect on this type of bacteria, the firstis the diode laser and the second NaOCl solution withspecial concentrations and times. the study conductedon human decoronated extracted teeth, adjusted with13mm root length, filled with a suspension of E.faecalis, Samples were divided into 14 groups eachgroup consisted of 10 prepared roots, sixty sampleswere irrigated with NaOCl solution at differentconcentrations (0.5, 2.5 and 5.25) at twoselected times (2 minutes and 5 minutes) for eachconcentration.Sixty samples were irradiated at different powers (2W, 2.5W and 3W); each power at thetotal irradiation time 30 and 60 seconds. Whencomparison was made between NaOCl irrigant and diodelaser in a combination among differentconcentrations, powers and times the result showedthat 5.25 NaOCl at both 2 minutes and 5 minutes hadthe highest antimicrobial effect with no significantdifferences from 3W laser / 10 sec (6 cycles) butsignificantly different from 3W / 5 sec (6 cycles). Author: Shehab, Najwan F./ Zakaria, Assistant Prof Nawfal a./ Taha, Prof Dr Mahmoud y. Binding Type: Paperback Number of Pages: 104 Publication Date: 2011/07/29 Language: English Dimensions: 9.02 x 5.98 x 0.25 inches

The Blue Laser Diode: The Complete Story $233.03 No Synopsis Available

R500 650nm 500mw Red laser light, laser diode $195.88 It's widely used in scientific research, laser printing, spectrum analysis, laser show, etc.

ZT Amplifiers Lunchbox Guitar Combo Amplifier $299 The ultra-compact ZT Lunchbox amplifier has changed the way many players think about amps. The Lunchbox has proven that an amp does not need to be big to be loud, or expensive to sound great. That you can actually gig with an amp that weighs less than 10 pounds. Doubters have become believers – The Lunchbox really delivers. ZT Amplifiers Lunchbox Combo Amplifier Features Ultra-low latency circuit for player responsiveness. Pure analog front-end, with diode overdrive capability. Proprietary dynamic tone shaping. Vintage modeled tone stack. Class A/B output stage with unregulated linear supply. Ultra-high performance speaker precisely matched and tuned to the closed box. Packing 200 watts of power, the Lunchbox has enough output for a jam or live gig, and world-class tone that has pros using it in the studio as well as onstage. Unlike any other amp close to its size, it has the muscle to handle any effects you throw in front of it, and the warmth and depth to sound great with single-coil pickups as well as humbuckers. The Lunchbox is a flexible and adaptable problem-solver in the hands of a musician. The Lunchbox is layered with responsive tone but powerful and seriously fun to play at the same time. Go ahead, plug in and see for yourself. Then, lift your jaw up off the floor, toss your Lunchbox in a backpack with some cords and pedals, and get out there and play!

Laser Diode Beam Basics, Manipulations and Characterizations $48.7 No Synopsis Available

Fender Amplifiers Patch 3 $4.99 Fender Amplifiers Patch 3"

Home built laser show

Hot-Pluggable Sfp Optical Transceivers

Toronto, Canada -GAO Fiber Optics (www.GAOFiberOptics.com), a leading supplier of fiber optic instruments, has rolled out a series of SFP optical transceivers. These hot-pluggable modules are compliant with ITU-T G.957 and G.958, Bellcore TA-NWT-000983 and IEC60825-1 standards. The transceiver series operates at a wavelength of 1310nm with a maximum data rate of 455Mb/s. They support single-mode operation and are compliant with specifications for multi-source package with duplex LC connector. Each member of the transceiver series has an eye safety design meeting Laser Class1 standards. The small form factor pluggable transceiver modules are designed for switch to switch interface, switch backplane applications, router/server interface and other optical transmission systems.

The transmitter section and receiver section work independently in the transceiver. The receiver section contains an InGaAs PIN photodiode, a trans-impedance amplifier and a post amplifier that receives an optical signal and converts it to electrical data. The receiver section contains a1310nm FP laser diode with back-facet monitor and a laser driver with APC functionality and converts electrical input data to a steady optical output signal.

This series of transceivers has the following models: HSFP-03-1311S-12, HSFP-12-1311S-12, HSFP-03-1311S-22, HSFP-03-1521S-12, HSFP-03-1521S-22, HSFP-03-3311M-12, HSFP-03-3311M-22, HSFP-03-3311S-12, HSFP-03-3311S-22, HSFP-03-3831M-12, HSFP-03-3831M-22, HSFP-12-1311S-22, HSFP-12-1521S-12, HSFP-12-1521S-22, HSFP-12-3311S-12, HSFP-12-3311S-22, HSFP-24-1321S-12, HSFP-24-1321S-22, HSFP-24-1521S-12, HSFP-24-1521S-22, HSFP-24-3311S-12, HSFP-24-3311S-22, HSFP-24-3831M-12, HSFP-24-3831M-22, HSFP-48-1521S-12, HSFP-48-1521S-22, HSFP-48-2321S-12, HSFP-48-2321S-22, HSFP-48-3311S-12, HSFP-48-3311S-22, HSFP-48-3831M-11, HSFP-48-3831M-12, HSFP-48-3831M-21, HSFP-48-3831M-22.
Visit http://www.GAOFiberOptics.com for more information or to purchase this product online.
For any sales inquires please contact:
1-877 585-9555 ext. 601 - Toll Free (USA & Canada)
1-416 292-0038 ext. 601 - All Other Areas
sales@gaofiberoptics.com
About GAO Fiber Optics
GAO Fiber Optics (www.GAOFiberOptics.com), a member company of GAO Group, is a leading provider of fiber optic test and measurement instruments, transceivers and other fiber optical devices.

Toronto, Canada -GAO Fiber Optics (www.GAOFiberOptics.com), a leading supplier of fiber optic instruments, has rolled out a series of SFP optical transceivers. These hot-pluggable modules are compliant with ITU-T G.957 and G.958, Bellcore TA-NWT-000983 and IEC60825-1 standards. The transceiver series operates at a wavelength of 1310nm with a maximum data rate of 455Mb/s. They support single-mode operation and are compliant with specifications for multi-source package with duplex LC connector. Each member of the transceiver series has an eye safety design meeting Laser Class1 standards. The small form factor pluggable transceiver modules are designed for switch to switch interface, switch backplane applications, router/server interface and other optical transmission systems.

The transmitter section and receiver section work independently in the transceiver. The receiver section contains an InGaAs PIN photodiode, a trans-impedance amplifier and a post amplifier that receives an optical signal and converts it to electrical data. The receiver section contains a1310nm FP laser diode with back-facet monitor and a laser driver with APC functionality and converts electrical input data to a steady optical output signal.

This series of transceivers has the following models: HSFP-03-1311S-12, HSFP-12-1311S-12, HSFP-03-1311S-22, HSFP-03-1521S-12, HSFP-03-1521S-22, HSFP-03-3311M-12, HSFP-03-3311M-22, HSFP-03-3311S-12, HSFP-03-3311S-22, HSFP-03-3831M-12, HSFP-03-3831M-22, HSFP-12-1311S-22, HSFP-12-1521S-12, HSFP-12-1521S-22, HSFP-12-3311S-12, HSFP-12-3311S-22, HSFP-24-1321S-12, HSFP-24-1321S-22, HSFP-24-1521S-12, HSFP-24-1521S-22, HSFP-24-3311S-12, HSFP-24-3311S-22, HSFP-24-3831M-12, HSFP-24-3831M-22, HSFP-48-1521S-12, HSFP-48-1521S-22, HSFP-48-2321S-12, HSFP-48-2321S-22, HSFP-48-3311S-12, HSFP-48-3311S-22, HSFP-48-3831M-11, HSFP-48-3831M-12, HSFP-48-3831M-21, HSFP-48-3831M-22.
Visit http://www.GAOFiberOptics.com for more information or to purchase this product online.
For any sales inquires please contact:
1-877 585-9555 ext. 601 - Toll Free (USA & Canada)
1-416 292-0038 ext. 601 - All Other Areas
sales@gaofiberoptics.com
About GAO Fiber Optics
GAO Fiber Optics (www.GAOFiberOptics.com), a member company of GAO Group, is a leading provider of fiber optic test and measurement instruments, transceivers and other fiber optical devices.

About the Author

About GAO Fiber Optics
GAO Fiber Optics (www.GAOFiberOptics.com), a member company of GAO Group, is a leading provider of fiber optic test and measurement instruments, transceivers and other fiber optical devices.