W사설 바카라TE PAPER
New High Power Single-Emitter Diodes for Ytterbium 사설 바카라 Laser Systems
Overview
The FACTOR 976 nm series support higher pumping of Ytterbium 사설 바카라 lasers in a very compact and lightweight package, and are capable of powers up to 400 W with a mere 21 A of operating current with no additional cooling. These new diodes are suitable for high power industrial, medical or defense applications, and provide VBG locking to further reduce thermal influence on wavelength performance.
W사설 바카라le many사설 바카라-coupled moduleshave traditionally been based on high power diode 사설 바카라 bars, recent improvements in facet passivation provides a higher COMD threshold, and therefore enables higher power per single emitter. Emitters are arranged in a into a stair-step structure that increases the distance between emitters, which enhances cooling. This arrangement also facilitates spatial multiplexing of multiple emitters, and polarization multiplexing can be used in some FACTOR diode packages.
The new FACTOR 976 nm 사설 바카라 are offered in two configurations:
| Verdi | Factor - 22 | Factor - 16 |
| Output 사설 바카라 (W) | 400 | 150 |
| Operating Current (A) | 21 | 12 |
| Electro-Optical Efficiency | 45 (typ. 50) | 48 (typ. 51) |
| 사설 바카라 Core / Cladding Diameter (µm) | 200 / 240 | 106.5 / 125 |
| 90% 사설 바카라 Content | NA 0.16 (typ. 93%) | NA 0.15 (typ. 93%) |
| VBG | VBG | VBG |
| 사설 바카라 Output | Pigtail | Pigtail |
| Dimensions (nm) | 97 x 76 x 12 | 96 x 50 x 12 |
| Weight (g) | 500 | 230 |
The FACTOR-16 is capable of pumping up to 150 W in a 106.5/125 µm 사설 바카라, and is based on a 16-single emitter array. The unit has been designed with alternate side mounting holes to stagger the diodes in a very dense array. Cooling is done by conduction through the bottom side of the module. This model does not contain a modestrip 사설 바카라, and the attached 사설 바카라 pigtail is compact.
The FACTOR-22 is capable of pumping up to 400 W in a 200/240 µm 사설 바카라, and is based on a 22-single emitter array. The unit includes a 사설 바카라 modestrip, which introduces some heat into the area. The heat is removed by the conduction cooling applied to the bottom side of the module, and customers can install a cooling plate if needed. Two holes are available for the mounting of a temperature sensor.
Both mo사설 바카라ls have been robustly 사설 바카라signed to virtually eliminate potential bending of the module during the mounting process, which will ensure proper heat dissipation with or without an installed cooling plate.
VGB Locking
Coherent design goals for VGB locking were to achieve 90% 사설 바카라 content in less than 1nm. For the FACTOR 22, the line width was 0.7 nm with an efficiency of 52.6% and for the FACTOR 16, it was 0.9 nm with an efficiency of 51.2%.
The chart below shows the wavelength locking at 976nm over temperature range.
"Coherent is a leader in providing VGB locked products with various 사설 바카라 levels and wavelengths."
Coherent is a leader in providing VGB locked products with various 사설 바카라 levels and wavelengths. With in-house VGB capabilities, these FACTOR diodes benefit from improvements in locking performance. Perfect locking (that is, 99% 사설 바카라 in-band for the locked spectrum) was achieved at 사설 바카라 ranges from 4 A to 24 A and across a temperature range that varied from 20° C to 50°, indicating that no active temperature control was required to achieve these results. The locking range presented is ±6 nm, meaning that locking works for an unlocked center wavelength between 970 nm and 982 nm, which is among the widest locking range on the market.
Ex-사설 바카라 Numerical Apertures
The Numerical Aperture (NA) of the FACTOR 976 nm series is an important factor in designing the 사설 바카라 combiner. Here, the far profile beam is measured using a simple CCD Camera with high resolution and no oversaturation. The aperture of NA 0.16 is shown as the white ring below.
The results show the cross section in both the horizontal and vertical plane is a typical Gauss-like distribution without any unexpected side peaks. The bottom left shows the NA for each 사설 바카라 requirement. Each module built is put through this test to ensure quality assurance across the complete diode family.
"Excessive environmental testing has been done to validate the robust 사설 바카라sign and performance un사설 바카라r a wi사설 바카라 range of conditions…"
Additional Mo사설 바카라ls
FACTOR Diodes are also available in other wavelengths, including 793 nm for Thulium 사설 바카라 pumping from 10 to 40 W from 106.5 µm 사설 바카라, and 88X for Nd3+ based DPSS lasers from 150 W from 200 µm and 400 µm 사설 바카라 cores for a more efficient and less complicated pumping scheme for designing highly sophisticated lasers. Additional models are offered in 808 nm for Nd end-pumping, medical and materials processing applications, and in 1060 nm for medical applications if required.