940nm VCSEL Array Chip with 7 Emitters
PAM-XIAMEN can offer 940nm VCSEL array chip with 7 emitters. This VCSEL array has a typical output optical power of 57mW, and the power conversion efficiency can reach 48.5%. Additional electrical parameters please refer to following tables:
1. 940nm VCSEL Chip Product Description & Features
Item No. PAM940V007K
· 940nm VCSEL Array
· 57mW @ 60mA
Number of emitters: 7
2. Mechanical Characteristics of 940nm VCSEL Array Chip with 7 Emitters
| Number of emitters | 7 |
| Chip width | 160±10um |
| Chip length | 232±10um |
| Chip height | 100±10um |
| Aperture | 11±2um |
3. Electro-Optical Characteristicsof 940nm VCSEL Chip with 7 Emitters
| Parameters | Symbol | Min | Typical | Max | Units | Test Condition |
| Threshold current | Ith | – | 8 | – | mA | @60mA, 25℃, CW mode |
| Operating voltage | Vf | 1.80 | 1.92 | 2.05 | V | |
| Wavelength | λpeak | 934 | 940 | 947 | nm | |
| Output optical power | P | 54 | 57 | 60 | mW | |
| Slope efficiency | ηs | – | 1.15 | – | W/A | |
| Power conversion efficiency | PCE | 46 | 48.5 | – | % | |
| Beam full divergence (D86) | φ | 25 | ||||
| Wavelength Temp. coefficient | dλ/dT | 0.07 | nm/℃ |
4. Typical Performance Curves of 940nm VCSEL Array with 7 Emitters @60mA
5. Absolute Maximum Ratings for 940nm VCSEL Array Chip with 7 Emitters
| Parameters | Conditions |
| Forward DC current | ≤100mA |
| Storage temperature | -40 to 85℃ |
| Packaging temperature | ≤260℃(<10S) |
| Junction temperature | ≤120℃ |
6. VCSEL Power Conversion Efficiency (PCE)
The PCE of VCSEL is an important parameter for describing the performance of VCSEL (Vertical Cavity Surface Emitting Laser). It is defined as the ratio of output optical power to input electrical power, used to measure the efficiency of VCSEL in converting electrical energy into light energy.
VCSEL has a higher PCE in a specific wavelength range (such as 800-1000nm) and is typically more efficient than most LEDs. This is due to the geometric structure and multi junction design of VCSEL, which enables it to provide optical power with high efficiency. In addition, the wavelength of VCSEL is less sensitive to temperature, so its performance is relatively stable.
In practical applications, VCSEL technology has been widely used to manufacture optoelectronic devices such as point laser modules. These devices have the characteristics of high power density, high reliability, and excellent high-temperature performance, making VCSEL have broad application prospects in fields such as machine vision and dToF LiDAR.
In summary, the PCE of VCSEL is one of the important indicators to measure its performance, and its high efficiency makes VCSEL advantageous in many optoelectronic devices and applications.
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