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COTEST

PRODUCTS

Product

Short Pulse Wafer Tester VMP9000

This is a narrow pulse driven wafer mass production test equipment designed for VCSEL lidar applications. This series of equipment is equipped with advanced driverswhich can provide drivers of less than 100ns and greater than 20A at wafer level, realizing LIV, near-field and far-field testing capabilities.

Short Pulse Wafer Tester VMP9000

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Wafer/Die Tester VPS7000

The laser design verification process requires thorough testing to obtain accurate specifications. These tests require precise probing, sophisticated instrumentation, the proper methodology, and dedicated algorithms. To increase the power of the laser emitter, the emitting module uses a vertical-cavity surface-emitting laser, which is smaller, lighter, more durable, and more power efficient than other lasers. VPS7000 use the modular function design, covering the requirements of the R&D and verification of the VCSEL arrays and the requirements for the test of electrical characteristics and optical characteristics.

Wafer/Die Tester VPS7000

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SPAD/SiPM Module Tester DPMT7000

DPMT7000 is composed of blue film loading module, photoelectric performance test module, blue film unloading module, drive and control software, etc., which can be used as a comprehensive performance evaluation mechanism for SiPM package testing. The system covers optoelectronic performance testing, combined with different blue film feeding forms, to achieve batch testing of SiPM.

SPAD/SiPM Module Tester DPMT7000

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ART OF INSTRUMENTATION

About Us

Located in Changzhou, Cotest (Changzhou) Testing Technology Co., Ltd. was established in 2019, focusing on the research and development, production, sales and service of optoelectronic semiconductor device testing equipment, and is committed to helping users accelerate the completion of the link construction from R&D test and sample production, small batch testing to mass production testing, and providing users with diversified test products and solutions. Cotest has become a relatively complete optoelectronic semiconductor test equipment and service provider in China, solving the " stranglehold " problem of test equipment for the production process of optoelectronic semiconductor devices, and has also become a partner of many domestic leading lidar companies in the field of testing.

2019

Established in 2019

40

Core invention patent and software copyright

200+

More than 200 customers

NEWS CENTER

News

Moving forward by light | Cotest Optical Core participated in the 3rd Optoelectronic Integrated Chip Strength Forum

Moving forward by light | Cotest Optical Core participated in the 3rd Optoelectronic Integrated Chip Strength Forum

On July 24-29, 2022, the Chinese Academy of Optical Engineering, together with the industry's leading organizations, held the "Forum on Photonic Integrated Circuits 2022", which was sponsored and participated by Cotai Optical Core.

Cotest Optical Core Launches VMP7000 Series Wafer Level Mass Production Test Equipment

Cotest Optical Core Launches VMP7000 Series Wafer Level Mass Production Test Equipment

Recently, Cotai Optical Core launched the VMP7000 series VCSEL wafer mass production test bench. The equipment is derived from the technical foundation of VPS7000 series and comprehensively integrates the efficiency

A delegation led by Qiao Junjie, Secretary of Wujin District Party Committee, visited Cotai Optical Core for investigation and guidance

A delegation led by Qiao Junjie, Secretary of Wujin District Party Committee, visited Cotai Optical Core for investigation and guidance

On the afternoon of October 31, Qiao Junjie, member of the Standing Committee of the Municipal Party Committee, secretary of the District Party Committee

Assisting the mass production of core light source devices of lidar Cotest optical core officially released the narrow pulse wafer mass production test bench VMP9000

Assisting the mass production of core light source devices of lidar Cotest optical core officially released the narrow pulse wafer mass production test bench VMP9000

VCSEL devices are widely used in distance sensing and 3D sensing. When VCSEL arrays are used for TOF modules, especially for dTOF systems such as LiDAR, the peak power, operating current, operating voltage, conversion efficiency

In 2022, Wujin District launched the series of activities of

In 2022, Wujin District launched the series of activities of "investors see wisdom", Zhang Qian, chairman of Cotest Optical Core, spoke as a talent representative

At 2:00 p.m. on June 9, the launching ceremony of the 2022 Wujin District "Talents See the Wisdom" series activities, hosted by the Wujin District Party Committee's Talent Work Leading Group Office, the Development and Reform Bureau, the Human Resources and Social Security Bureau, and the local financial supervision and administration bureau, and undertaken by Jiangsu Guojing Group Co., Ltd., was held in Jingwei Building, with district leaders Yun Qicheng and Zhao Tiansheng participating.

Deepen the integration of industry and education Changzhou University and Ketai Optical Core to establish an industry university research cooperation base

Deepen the integration of industry and education Changzhou University and Ketai Optical Core to establish an industry university research cooperation base

On the morning of May 18, the Microelectronics School of Changzhou University and Ketai Optical Core held the licensing ceremony of "Production, Learning and Research Base". Xu Shoukun, Vice President of Changzhou University, Zhou Xia, Secretary of the Party Committee of the School of Microelectronics of Changzhou University, Yang Changchun, Dean of the School of Microelectronics of Changzhou University, Han Fudong, Deputy Secretary of the Party Committee, Qian Yi, Director of the University Industry Office, and Zhang Qian, Chairman of Kotai Optical Core (Changzhou) Testing Technology Co., Ltd., Zhang Wei, Chief Operating Officer, and Jiang Wei, Chief Technical Officer attended the signing and licensing ceremony.

Welcome, light catcher! Cotest Optical Core welcomes the move

Welcome, light catcher! Cotest Optical Core welcomes the move

In September 2020, as a research and development entity of optoelectronic semiconductor testing equipment in Changzhou, Ketai Optical Core officially settled in Jiangsu Research Institute of Dalian University of Technology in Changzhou Science and Education City.

Greetings from Wuhan: Cotest will accompany you to stick to this city

Greetings from Wuhan: Cotest will accompany you to stick to this city

Ketai, a company headquartered in Wuhan, is busy and full during this exciting holiday. On January 23, Wuhan was closed to the outside world, with a cold scene and a sad wind. The citizens were stunned, confused and at a loss, while the power of assistance quickly gathered. The smoke and dust offend the snow mountain, and the drum horn moves the river city.

Our VCSEL test machine was successfully delivered to domestic well-known chip manufacturers

Our VCSEL test machine was successfully delivered to domestic well-known chip manufacturers

Recently, the 3D VCSEL test bench independently developed by our company was successfully delivered to a well-known domestic chip manufacturer in Shenzhen. All performance indicators met customer requirements and passed the acceptance.

Exclusive interview of Cotest test:

Exclusive interview of Cotest test: "tailor" for VCSEL enterprises to greatly optimize customer customized test experience

According to Myers Consulting, Cotai Testing, which focuses on electronic instruments and testing technology, has mainly provided testing services for traditional optical communication enterprises since its establishment in 2012.

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