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    • 2. 发明申请
    • MULTI-CHAMBERED EXCIMER OR MOLECULAR FLUORINE GAS DISCHARGE LASER FLUORINE INJECTION CONTROL
    • 多层离子注射器或分子荧光体排放激光器氟注射控制
    • WO2006039157A2
    • 2006-04-13
    • PCT/US2005/033754
    • 2005-09-19
    • CYMER, INC.BESAUCELE, Herve, A.DUNSTAN, Wayne, J.ISHIHARA, ToshihikoJACQUES, Robert, N.TRINTCHOUK, Fedor, B.
    • BESAUCELE, Herve, A.DUNSTAN, Wayne, J.ISHIHARA, ToshihikoJACQUES, Robert, N.TRINTCHOUK, Fedor, B.
    • H01S3/22H01S3/223
    • H01S3/036H01S3/225H01S3/2316H01S3/2366
    • A multi-chambered excimer or molecular halogen gas discharge laser system comprising at least one oscillator chamber and at least one amplifier chamber producing oscillator output laser light pulses that are amplified in the at least one power chamber, having a fluorine injection control system and a method of using same is disclosed, which may comprise: a halogen gas consumption estimator: estimating the amount of halogen gas that has been consumed in one of the at least one oscillator chamber based upon at least a first operating parameter of one of the least one oscillator chamber and the at least one amplifier chamber, and the difference between a second operating parameter of the at least one oscillator chamber and the at least one amplifier chamber, and estimating the amount of halogen gas that has been consumed in the other of the at least one oscillator chamber and the at least one amplifier chamber based upon at least a third operating parameter of the other of the at least one oscillator chamber and the at least one amplifier chamber, and producing an output representative of an estimated halogen gas consumption in the at least one oscillator chamber and of the halogen gas consumption in the at least one amplifier chamber, and a halogen gas injection controller determining the amount of halogen gas injection for the at least one oscillator chamber and the at least one amplifier chamber based upon the estimated fluorine consumption outputs from the fluorine consumption estimator and a cost function comprising a plurality of weighted injection decision determinations.
    • 一种多腔准分子或分子卤素气体放电激光系统,包括至少一个振荡器室和至少一个产生振荡器的放大器室输出在至少一个功率室中放大的激光脉冲,具有氟注入控制系统和方法 其中可以包括:卤素气体消耗估计器:基于至少一个振荡器之一的至少一个振荡器中的至少一个振荡器的至少一个振荡器的至少第一操作参数来估计在所述至少一个振荡器腔中的一个中消耗的卤素气体的量 室和至少一个放大器室,以及所述至少一个振荡器室和所述至少一个放大器室的第二操作参数之间的差异,以及估计至少在另一个中消耗的卤素气体的量 基于所述至少一个的另一个的至少第三操作参数,一个振荡器室和所述至少一个放大器室 e振荡器室和所述至少一个放大器室,并且产生代表所述至少一个振荡器室中的估计的卤素气体消耗量的输出和所述至少一个放大器室中的卤素气体消耗量,以及卤素气体注入控制器确定 基于来自氟消耗估计器的估计的氟消耗量输出和包括多个加权喷射判定确定的成本函数,至少一个振荡室和至少一个放大器室的卤素气体喷射量。
    • 4. 发明申请
    • PULSE ENERGY CONTROL FOR EXCIMER LASER
    • 激光激光的脉冲能量控制
    • WO9919950A8
    • 1999-06-24
    • PCT/US9818138
    • 1998-09-01
    • CYMER INCSANDSTROM RICHARD LBESAUCELE HERVE AFOMENKOV IGOR VDAS PALASH P
    • SANDSTROM RICHARD LBESAUCELE HERVE AFOMENKOV IGOR VDAS PALASH P
    • G03F7/20H01S3/03H01S3/036H01S3/08H01S3/134H01S3/137H01S3/225H01S3/18
    • G03F7/70025G03F7/70041G03F7/70216G03F7/70558G03F7/70575H01S3/03H01S3/036H01S3/08009H01S3/134H01S3/225H01S3/2251H01S3/2256
    • A process for controlling pulse energy in burst of pulses produced by an excimer laser. The energy of each pulse in each burst is measured. The rate of change of pulse energy with charging voltage is determined. A pulse energy error is determined for a previous pulse of the present burst. An integrated dose error is also determined for all previous pulses in the current burst. A charging voltage for the next pulse is determined using the pulse energy error, the integrated dose error, the rate of change of energy with charging voltage and a reference voltage. In a preferred embodiment, the rate of change of energy with voltage is determined by dithering the voltage during two pulses of each burst, once lower and once higher. The reference voltage is a voltage calculated using prior voltage and energy data. In this embodiment the method of determining the reference voltage during a first portion of the pulse is different from the method used during a latter portion of the burst. During the first set of pulses, for each pulse, (40 in this embodiment) a specified voltage calculated using voltage and energy data from a corresponding pulse in a previous burst is utilized as a prediction of the voltage needed to produce a pulse energy converging on a target pulse energy. For pulses (41) and thereafter the reference voltage for each pulse is the specified voltage for the previous pulse.
    • 用于通过准分子激光器产生的脉冲脉冲串来控制脉冲能量的过程。 测量每个脉冲中每个脉冲的能量。 确定脉冲能量随充电电压的变化率。 针对当前脉冲串的先前脉冲确定脉冲能量误差。 还针对当前突发中的所有先前脉冲确定积分剂量误差。 使用脉冲能量误差,积分剂量误差,带充电电压的能量变化率和参考电压来确定下一个脉冲的充电电压。 在优选实施例中,通过在每个脉冲串的两个脉冲期间抖动电压来确定能量与电压的变化率,一次较低和一次更高。 参考电压是使用先前的电压和能量数据计算的电压。 在该实施例中,在脉冲的第一部分期间确定参考电压的方法与在脉冲串的后一部分期间使用的方法不同。 在第一组脉冲期间,对于每个脉冲(在本实施例中为40)使用来自先前脉冲串中的相应脉冲的电压和能量数据计算的指定电压被用作产生脉冲能量收敛所需的电压的预测 目标脉冲能量。 对于脉冲(41),此后每个脉冲的参考电压是先前脉冲的指定电压。
    • 10. 发明申请
    • LASER GAS INJECTION SYSTEM
    • 激光喷射系统
    • WO2008105988A2
    • 2008-09-04
    • PCT/US2008001348
    • 2008-02-01
    • CYMER INCDUNSTAN WAYNE JO'BRIEN KEVIN MJACQUES ROBERT NBESAUCELE HERVE ARIGGS DANIEL JRATNAM ARAVIND
    • DUNSTAN WAYNE JO'BRIEN KEVIN MJACQUES ROBERT NBESAUCELE HERVE ARIGGS DANIEL JRATNAM ARAVIND
    • H01S3/22
    • H01S3/036G03F7/70025G03F7/70525G03F7/70975H01S3/0014H01S3/1305H01S3/1306H01S3/134H01S3/2251H01S3/2256
    • A method and apparatus are disclosed which may comprise predicting the gas lifetime for a gas discharge laser light source for a photolithography process, the light source comprising a halogen contaim'ng lasing gas may comprise: utilizing at least one of a plurality of laser operating input and/or output parameters; utilizing a set of at least one parameter of utilization in the photolithography process to determine a gas use model in relation to the respective input or output parameter; predicting the end of gas life based upon the model and a measurement of the respective input or output parameter. The parameter may comprise a pulse utilization pattern. The method and apparatus may comprise performing gas management for a gas discharge laser light source for a photolithography process, the light source comprising a halogen containing lasing gas comprising: utilizing periodic and frequent partial gas refills comprising an inject comprising a mixture of halogen gas and bulk gas in generally the same ration as the premix ratio provided to the laser in a full gas refill, and in an amount less than two percent of the total gas pressure prior to the injection.
    • 公开了一种可以包括预测用于光刻工艺的气体放电激光源的气体寿命的方法和装置,包括卤素阻挡激光气体的光源可以包括:利用多个激光操作输入中的至少一个 和/或输出参数; 在光刻工艺中利用一组至少一个利用参数来确定相对于相应的输入或输出参数的气体使用模型; 根据模型和相应的输入或输出参数的测量来预测气体寿命的结束。 该参数可以包括脉冲利用模式。 该方法和装置可以包括对用于光刻工艺的气体放电激光光源执行气体管理,该光源包括含卤素的激光气体,其包括:利用周期性和频繁的部分气体再填充,其包括含有卤素气体和体积的混合物 气体通常与在全气体再填充中提供给激光器的预混合比率相同,并且其量小于注射前总气体压力的2%。