SPECTRA PHYSICS G0149-000 Fused Block Silica Autocorrelator 409 Rotating

( Brand: Spectra Physics ), ( Manufacturer Part Number: G0149-000 ), ( Part Type: Block ), ( Country/region Of Manufacture: United States ), ( Country Of Manufacture: Usa )

Review SPECTRA PHYSICS Model Fused 409 Block Silica Autocorrelator Rotating

The G0149-000 Fused Physics 409 Block Spectra Silica Autocorrelator Rotating is a sophisticated instrument designed for advanced spectroscopic analysis. This autocorrelator rotating block is specifically engineered for use with silica-based materials, making it an essential tool for researchers and scientists working in fields such as material science, chemistry, and physics.

The autocorrelator rotating block is constructed from high-quality fused silica, a material known for its exceptional thermal and chemical resistance. This ensures that the block can withstand the harsh conditions often encountered in laboratory settings, while also providing a smooth and transparent surface for optimal light transmission.

The block features a unique rotating design, which allows for the analysis of various sample orientations. This is particularly beneficial for anisotropic materials, where properties can vary depending on the direction of measurement. The rotating mechanism is precise and reliable, allowing for accurate and reproducible results.

The G0149-000 Fused Physics 409 Block Spectra Silica Autocorrelator Rotating is compatible with a wide range of spectrometers, making it a versatile tool for any lab. Its compact size and robust construction make it easy to transport and handle, while its high-quality materials ensure long-term durability.

In summary, the G0149-000 Fused Physics 409 Block Spectra Silica Autocorrelator Rotating is a powerful and versatile instrument for advanced spectroscopic analysis. Its rotating design, high-quality fused silica construction, and compatibility with various spectrometers make it an invaluable tool for researchers and scientists working with silica-based materials.

1. High-precision measurements: The autocorrelator is designed to provide high-precision measurements, making it suitable for use in various physical and chemical research applications.

2. Durable construction: The fused silica rotor and other high-quality components ensure the autocorrelator's durability and long-term reliability.

3. Wide range of applications: The autocorrelator can be used in various fields, including spectroscopy, chemistry, and materials science.

4. User-friendly interface: The autocorrelator comes with a user-friendly interface, making it easy to operate and program for different applications.

5. Excellent customer support: The manufacturer offers excellent customer support, including technical assistance and troubleshooting guidance.

1. High cost: The autocorrelator is relatively expensive, which may be a limiting factor for some researchers or institutions with limited budgets.

2. Requires specialized knowledge: Operating and programming the autocorrelator may require some level of specialized knowledge, making it less suitable for beginners or those without a background in physics or chemistry.

3. Limited compatibility: The autocorrelator may not be compatible with all types of spectrometers, requiring users to check for compatibility before making a purchase.

4. Potential for maintenance issues: Like any high-precision instrument, the autocorrelator may require regular maintenance and calibration to ensure accurate measurements.

The G0149-000 Fused Physics 409 Block Spectra Silica Autocorrelator Rotating is a high-quality instrument that offers excellent precision and durability. Its wide range of applications and user-friendly interface make it an attractive option for researchers in various fields. However, its high cost and potential for maintenance issues may be a limiting factor for some users. If you have the necessary knowledge and budget, the autocorrelator can be a valuable addition to your research tools.

If you are in the market for a high-precision autocorrelator, the G0149-000 Fused Physics 409 Block Spectra Silica Autocorrelator Rotating is a worthwhile consideration. However, before making a purchase, be sure to check for compatibility with your existing equipment and consider the potential for maintenance costs. It may also be helpful to seek out recommendations from other researchers in your field to ensure that the autocorrelator is the best fit for your specific needs.

Details:

Please locate user manuals, model 409 autocorrelator this part its theory and use is best described in the patent for the model please see us4406542 us a rapid scanning auto correlation detector abstract auto correlation traces of laser pulses of short duration are produced by a method and apparatus that uses a rotating glass block to vary the path length on a time scale rapid enough to display the traces on a synchronized oscilloscope. This corresponds to 60 hertz repetition of the relative delay scan, since the block has two identical sides. 2, showing the offset of beam positions due to the use of retro reflecting prisms rather than ordinary mirrors. The relative travel time of the two beams is thus varied as the block rotates, and the approach angles of the two beams are chosen so that the relative travel time of the beams is nearly linearly related to the angle of rotation of the block over the scan range.

Auto correlation with rapid scanning through rotation of the block enables measurement of repetitive laser light pulses of very short duration, down to the order of one pigskins. The autocorrelator utilizes a polarized input beam and a means for splitting the beam into first and second separate beams. Partial overlap produces some output, and maximum output is realized when there is no delay, with the two waves reinforcing each other. Since it is desired to obtain a relatively flat response of beam intensity versus rotational position of the block, it is important that the light be properly polarized to eliminate any significant reflection transmission factors at the surfaces of the block.

Because both beams in the present invention go through the rotating block rather than just one beam as in prior art linear driven devices a substantially linear relative delay of the two beam arms is produced during rotation of the block. A rotating, light transmitting, refractive block is positioned in the paths of both beams which strike the block at a fixed angle relative to each other but at varying angles to the block faces. Thick quartz rotating fused silica block g0149 pulse width 1 PS x 65 PS further information can be found on the Spectra Physics.

Of the drawings the rotating block is high lighted in blue in the and on images. It is an important object of the present invention to pass the two arms of a split beam through a single rotating block simultaneously to produce a substantially linear relative delay response and to rotate the block at a speed which permits the traces to be displayed on a synchronized oscilloscope in real time. Other embodiment's of the invention embodying the same or equivalent principles may be used and structural changes may be made as desired by those skilled in the art without departing from the present invention and the purview of the appended claims.

Both paths of a split input beam of a laser pulse pass through the glass block. The paths of the two beam arms pass through the block from different directions at a relative angle chosen so that the relative travel time difference is nearly linearly related to the angular position of the block during its rotation. The transmission factors change with the angle the beam makes with the glass surfaces.

If only one beam passed through the block, the response would be nonlinear and the proper calibration of the auto correlation trace on an oscilloscope which has a uniform rate of sweep in the horizontal direction would not be possible. Glass do not adversely affect the auto correlation function. The time delayed beams are then reflected into a device for detecting the difference in travel time between the beams.

Light travels more slowly through the block than through air and the greater the thickness of block to penetrate, the greater the delay. The relative subtracting delay of the two beams is nearly linear assuming the beams are properly oriented. This depends upon the speed of rotation of the block and the thickness of the block. The system is capable of displaying the trace of an auto correlation function on any high impedance oscilloscope for continuous monitoring of pulse characteristics while fine tuning laser performance.

The time base on the oscilloscope must be converted to time base in auto correlation space.

Rotating block autocorrelator apparatus and methods which incorporate the structure and techniques described above and which are effective to function as described above constitute further, specific objects of this invention. The output of the nonlinear crystal is sensed by a photo multiplier tube and is connected to an oscilloscope for display. If there is no overlap at all.

1 is a partially schematic elevation view of a rapid scanning autocorrelator constructed in accordance with one embodiment of the present invention.

Rotation of the glass block changes the relative time of travel for light pulses along the two paths. This facilitates fine tuning of the pulsed input beam for very short pulse width s. The ends of the block are frosted or opaqued to prevent transmission except during the relative delay scan. When the fixed delay is a known quantity, the scope can be calibrated.

If the waves of the two beams cancel out, there is no output from the nonlinear crystal. An oscilloscope display of the auto correlation traces allows the user to make laser adjustments while continuously monitoring the pulse correlation function so that the laser can be tuned in real time to produce ultra short pulses. Each beam as it passes through the rotating block encounters a delay which plots as a curve against time. To check the calibration of the oscilloscope, a fixed, known delay is put into one beam or arm of the autocorrelator and the resulting shift in the scope trace is observed.

Under that condition peak intensity is produced and the nonlinear crystal produces a doubled frequency, halved wave length ultraviolet output from the two beam inputs. Output intensity is measured for use in displaying the function on an oscilloscope. 5, but with the glass block in another position of rotation.

The rate of rotation of the refractive block is fixed, and it may rotate at 30 cycles per second. By scanning the relative delay between the two paths of a split beam in a Michelson arrangement the autocorrelator uses the light to measure itself it is also important that both beams pass through the block so that both pass through the same surfaces. The input beam into the autocorrelator is vertically polarized so that light transmission factors at the surfaces of the refractive block e. 1, showing the paths of light beams as they are split from an input beam and refracted and reflected to detection apparatus.

Summary of the present invention it is an object of this invention to improve on prior interfered and autocorrelator apparatus through methods and apparatus which enable contemporaneous monitoring of an auto correlation trace during fine tuning of a pulsed laser for very short pulse width s, utilizing a simple and improved variable beam delay apparatus. The thickness of the block is selected in accordance with the size range of the pulse duration's to be monitored.

The oscilloscope displays intensity versus time. 7 is a graph depicting first the variation in path length or delay of each beam individually due to passage through the rotating glass block, and then the subtracting or relative delay between the two beams, as a function of the angular position of the block. The autocorrelator apparatus and method of the present invention enable tuning of a pulsed laser in real time, down to a pulse width of one pigskins or less.

Thicker blocks are used for pulses of larger width or duration, while thinner blocks are used for shorter duration pulses. 3 is a schematic view of the autocorrelator system depicted in figs.

This part is to the Spectra Physics model 409 autocorrelator. 1 and 2, as viewed along the line and in the direction indicated by the arrows 3/3 in fig. In a preferred embodiment, the conversion factor is 15 pigskins in auto correlation space per millisecond on the oscilloscope.

specifications lablaserphotonicszo:

• brand: Spectra Physics
• mpn: G0149-000
• part type: Block
• country/region of manufacture: United States
• country of manufacture: Usa

Ratings:

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• city: Oakland, California

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